From 87eb9f03832270c20d464ae7d99b9e304f2dd666 Mon Sep 17 00:00:00 2001
From: Zhongwei Li <lizhongwei.nkcs@gmail.com>
Date: Sun, 30 Nov 2025 08:48:40 +0800
Subject: [PATCH] Initial commit

---
 .claude-plugin/plugin.json         |  12 +
 README.md                          |   3 +
 SKILL.md                           | 540 +++++++++++++++++++++++
 plugin.lock.json                   |  77 ++++
 references/ast-grep-guide.md       | 680 +++++++++++++++++++++++++++++
 references/fd-patterns.md          | 290 ++++++++++++
 references/fzf-workflows.md        | 589 +++++++++++++++++++++++++
 references/jq-cookbook.md          | 656 ++++++++++++++++++++++++++++
 references/rg-patterns.md          | 443 +++++++++++++++++++
 references/yq-examples.md          | 677 ++++++++++++++++++++++++++++
 scripts/combo-search.sh            | 278 ++++++++++++
 scripts/interactive-code-finder.sh | 436 ++++++++++++++++++
 12 files changed, 4681 insertions(+)
 create mode 100644 .claude-plugin/plugin.json
 create mode 100644 README.md
 create mode 100644 SKILL.md
 create mode 100644 plugin.lock.json
 create mode 100644 references/ast-grep-guide.md
 create mode 100644 references/fd-patterns.md
 create mode 100644 references/fzf-workflows.md
 create mode 100644 references/jq-cookbook.md
 create mode 100644 references/rg-patterns.md
 create mode 100644 references/yq-examples.md
 create mode 100755 scripts/combo-search.sh
 create mode 100755 scripts/interactive-code-finder.sh

diff --git a/.claude-plugin/plugin.json b/.claude-plugin/plugin.json
new file mode 100644
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--- /dev/null
+++ b/.claude-plugin/plugin.json
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+{
+  "name": "cli-ninja",
+  "description": "Master CLI navigation and code exploration using modern command-line tools (fd, rg, ast-grep, fzf, jq, yq)",
+  "version": "0.1.1",
+  "author": {
+    "name": "pythoninthegrass",
+    "email": "pythoninthegrass@users.noreply.github.com"
+  },
+  "skills": [
+    "./"
+  ]
+}
\ No newline at end of file
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..0f4d41b
--- /dev/null
+++ b/README.md
@@ -0,0 +1,3 @@
+# cli-ninja
+
+Master CLI navigation and code exploration using modern command-line tools (fd, rg, ast-grep, fzf, jq, yq)
diff --git a/SKILL.md b/SKILL.md
new file mode 100644
index 0000000..59272e2
--- /dev/null
+++ b/SKILL.md
@@ -0,0 +1,540 @@
+---
+name: cli-ninja
+description: Master CLI navigation and code exploration using modern command-line tools. Use this skill when navigating repositories, searching for files/text/code patterns, or working with structured data (JSON/YAML/XML). Provides guidance on fd (file finding), rg (text search), ast-grep (code structure), fzf (interactive selection), jq (JSON), and yq (YAML/XML).
+---
+
+# CLI Ninja
+
+## Overview
+
+This skill provides guidance for efficient repository navigation and code exploration using modern CLI tools. Each tool serves a specific purpose: `fd` for finding files, `rg` for searching text, `ast-grep` for understanding code structure, `fzf` for interactive selection, `jq` for JSON manipulation, and `yq` for YAML/XML processing.
+
+## Tool Selection Decision Tree
+
+When navigating or exploring a repository, choose the appropriate tool based on the task:
+
+```
+What are you looking for?
+
+├─ FILES by name/path/extension?
+│  └─ Use: fd
+│     └─ Need to select from results? → Pipe to fzf
+│
+├─ TEXT/STRINGS in file contents?
+│  └─ Use: rg (ripgrep)
+│     └─ Need to select from results? → Pipe to fzf
+│
+├─ CODE STRUCTURE (functions, classes, imports)?
+│  └─ Use: ast-grep
+│     └─ Need to select from results? → Pipe to fzf
+│     └─ Need to refactor/replace? → Use ast-grep --rewrite
+│
+├─ Working with JSON data?
+│  └─ Use: jq
+│
+└─ Working with YAML or XML data?
+   └─ Use: yq
+```
+
+## Quick Reference Guide
+
+### fd - Find Files
+
+**Basic patterns:**
+```bash
+# Find by name
+fd 'pattern'
+
+# Find by extension
+fd -e py          # All Python files
+fd -e 'test.py$'  # Files ending in test.py
+
+# Find in specific directory
+fd 'pattern' src/
+
+# Case-insensitive
+fd -i readme
+
+# Hidden files
+fd -H '.env'
+
+# Exclude patterns
+fd -e py -E '*test*'
+```
+
+**Common workflows:**
+```bash
+# Find and edit a config file interactively
+fd config | fzf | xargs $EDITOR
+
+# Find all Python files modified in last 7 days
+fd -e py -td --changed-within 7d
+
+# Find files by size
+fd -e db --size +100m
+```
+
+See `references/fd-patterns.md` for comprehensive patterns and flags.
+
+### rg - Search Text/Strings
+
+**Basic patterns:**
+```bash
+# Basic search
+rg 'search_term'
+
+# Case-insensitive
+rg -i 'search_term'
+
+# Whole word only
+rg -w 'word'
+
+# With context lines
+rg -C 3 'pattern'        # 3 lines before/after
+rg -B 2 -A 5 'pattern'   # 2 before, 5 after
+
+# Specific file types
+rg -t py 'import'        # Python files
+rg -t rust 'fn main'     # Rust files
+```
+
+**Advanced usage:**
+```bash
+# Search with line numbers and file names
+rg -n 'pattern'
+
+# Multiline search
+rg -U 'pattern.*spanning.*lines'
+
+# Exclude patterns
+rg 'TODO' -g '!*test*'
+
+# Search in specific directories
+rg 'pattern' src/ core/
+
+# JSON output for scripting
+rg --json 'pattern'
+```
+
+**Interactive workflows:**
+```bash
+# Search and open in editor
+rg -l 'TODO' | fzf | xargs $EDITOR
+
+# Search with preview
+rg --line-number 'pattern' | fzf --preview 'bat --color=always {1} --highlight-line {2}'
+```
+
+See `references/rg-patterns.md` for regex tips and advanced patterns.
+
+### ast-grep - Find Code Structure
+
+**Philosophy:** ast-grep searches code by structure, not strings. It understands programming language syntax and semantics.
+
+**Basic patterns:**
+
+**Python:**
+```bash
+# Find all function definitions
+ast-grep --pattern 'def $FUNC($$$)' -l py
+
+# Find specific function calls
+ast-grep --pattern 'player.play($$$)' -l py
+
+# Find class definitions
+ast-grep --pattern 'class $CLASS:' -l py
+
+# Find all imports of a module
+ast-grep --pattern 'from $MOD import $$$' -l py
+ast-grep --pattern 'import $MOD' -l py
+
+# Find type annotations
+ast-grep --pattern 'def $FUNC($$$) -> $TYPE:' -l py
+```
+
+**JavaScript/TypeScript:**
+```bash
+# Find React components
+ast-grep --pattern 'function $COMP() { $$$ }' -l tsx
+
+# Find useState hooks
+ast-grep --pattern 'const [$STATE, $SETTER] = useState($$$)' -l tsx
+
+# Find async functions
+ast-grep --pattern 'async function $FUNC($$$) { $$$ }' -l js
+
+# Find imports
+ast-grep --pattern 'import $$ from "$MODULE"' -l ts
+```
+
+**Rust:**
+```bash
+# Find function definitions
+ast-grep --pattern 'fn $FUNC($$$) { $$$ }' -l rs
+
+# Find struct definitions
+ast-grep --pattern 'struct $NAME { $$$ }' -l rs
+
+# Find impl blocks
+ast-grep --pattern 'impl $TRAIT for $TYPE { $$$ }' -l rs
+
+# Find macro usage
+ast-grep --pattern 'println!($$$)' -l rs
+```
+
+**Go:**
+```bash
+# Find function definitions
+ast-grep --pattern 'func $FUNC($$$) $$$ { $$$ }' -l go
+
+# Find struct definitions
+ast-grep --pattern 'type $NAME struct { $$$ }' -l go
+
+# Find interface implementations
+ast-grep --pattern 'func ($RECV $TYPE) $METHOD($$$) $$$ { $$$ }' -l go
+
+# Find goroutines
+ast-grep --pattern 'go $FUNC($$$)' -l go
+```
+
+**Zig:**
+```bash
+# Find function definitions
+ast-grep --pattern 'pub fn $FUNC($$$) $$$ { $$$ }' -l zig
+
+# Find struct definitions
+ast-grep --pattern 'const $NAME = struct { $$$ };' -l zig
+
+# Find test functions
+ast-grep --pattern 'test "$NAME" { $$$ }' -l zig
+
+# Find error handling
+ast-grep --pattern 'try $EXPR' -l zig
+```
+
+**Ruby:**
+```bash
+# Find method definitions
+ast-grep --pattern 'def $METHOD($$$); $$$; end' -l rb
+
+# Find class definitions
+ast-grep --pattern 'class $CLASS; $$$; end' -l rb
+
+# Find blocks
+ast-grep --pattern '$EXPR do |$PARAM|; $$$; end' -l rb
+
+# Find Rails routes
+ast-grep --pattern 'get "$PATH", to: "$HANDLER"' -l rb
+```
+
+**Refactoring with ast-grep:**
+```bash
+# Rename a function across the codebase
+ast-grep --pattern 'old_function($$$)' --rewrite 'new_function($$$)' -l py --interactive
+
+# Update API calls
+ast-grep --pattern 'api.v1.$METHOD($$$)' --rewrite 'api.v2.$METHOD($$$)' -l py
+
+# Modernize code patterns
+ast-grep --pattern 'var $VAR = $EXPR' --rewrite 'const $VAR = $EXPR' -l js
+```
+
+**Interactive workflows:**
+```bash
+# Find and select a function to edit
+ast-grep --pattern 'def $FUNC($$$)' -l py | fzf | cut -d: -f1 | xargs $EDITOR
+
+# Find all TODOs in code comments (use rg instead)
+rg 'TODO|FIXME' | fzf
+```
+
+See `references/ast-grep-guide.md` for comprehensive patterns across all languages.
+
+### fzf - Interactive Selection
+
+**Basic usage:**
+```bash
+# Pipe any list to fzf for selection
+command | fzf
+
+# Multi-select mode
+command | fzf -m
+
+# With preview window
+command | fzf --preview 'bat {}'
+```
+
+**Preview configurations:**
+```bash
+# Preview files with syntax highlighting
+fd -t f | fzf --preview 'bat --color=always {}'
+
+# Preview with line numbers
+rg --line-number 'pattern' | fzf --preview 'bat --color=always {1} --highlight-line {2}'
+
+# Preview JSON files
+fd -e json | fzf --preview 'jq . {}'
+
+# Custom preview window size
+fzf --preview 'cat {}' --preview-window=right:50%
+```
+
+**Keybindings:**
+```bash
+# ctrl-t: Paste selected files
+# ctrl-r: Paste from history
+# alt-c: cd into selected directory
+
+# Custom keybindings
+fzf --bind 'ctrl-y:execute-silent(echo {} | pbcopy)'
+```
+
+See `references/fzf-workflows.md` for advanced interactive workflows.
+
+### jq - JSON Processing
+
+**Basic queries:**
+```bash
+# Pretty print
+jq . file.json
+
+# Extract field
+jq '.name' file.json
+
+# Array indexing
+jq '.[0]' file.json
+
+# Nested access
+jq '.user.name' file.json
+
+# Array operations
+jq '.[] | .name' file.json
+```
+
+**Common transformations:**
+```bash
+# Filter arrays
+jq '.users[] | select(.active == true)' file.json
+
+# Map over arrays
+jq '.users | map(.name)' file.json
+
+# Sorting
+jq '.users | sort_by(.age)' file.json
+
+# Group by
+jq 'group_by(.category)' file.json
+
+# Count items
+jq '.items | length' file.json
+
+# Keys extraction
+jq 'keys' file.json
+```
+
+**Advanced usage:**
+```bash
+# Multiple filters
+jq '.users[] | select(.age > 18) | .name' file.json
+
+# Construct new objects
+jq '{name: .firstName, email: .emailAddress}' file.json
+
+# Combine multiple files
+jq -s '.[0] + .[1]' file1.json file2.json
+
+# Read from stdin
+curl -s https://api.example.com/data | jq '.results[]'
+```
+
+See `references/jq-cookbook.md` for comprehensive transformations.
+
+### yq - YAML/XML Processing
+
+**YAML queries:**
+```bash
+# Pretty print
+yq . file.yaml
+
+# Extract field
+yq '.name' file.yaml
+
+# Nested access
+yq '.services.web.image' docker-compose.yml
+
+# Array operations
+yq '.dependencies[]' file.yaml
+
+# Convert to JSON
+yq -o json . file.yaml
+```
+
+**XML queries:**
+```bash
+# Parse XML
+yq -p xml . file.xml
+
+# Extract elements
+yq -p xml '.root.element' file.xml
+
+# Convert XML to JSON
+yq -p xml -o json . file.xml
+```
+
+**Common operations:**
+```bash
+# Update values
+yq '.version = "2.0"' file.yaml
+
+# Merge files
+yq '. *= load("other.yaml")' file.yaml
+
+# Filter arrays
+yq '.items[] | select(.enabled == true)' file.yaml
+```
+
+See `references/yq-examples.md` for YAML/XML processing patterns.
+
+## Combination Workflows
+
+Real-world tasks often combine multiple tools:
+
+### 1. Find and Edit Files with Context
+
+```bash
+# Find Python files containing a function, preview them, then edit
+rg -l 'def process_data' -t py | fzf --preview 'rg -C 5 "def process_data" {}' | xargs $EDITOR
+```
+
+### 2. Code Refactoring Workflow
+
+```bash
+# Find all usages of a function across the codebase
+ast-grep --pattern 'old_function($$$)' -l py | fzf -m
+
+# Then refactor with interactive confirmation
+ast-grep --pattern 'old_function($$$)' --rewrite 'new_function($$$)' -l py --interactive
+```
+
+### 3. Interactive Configuration Explorer
+
+```bash
+# Find config files and explore their structure
+fd -e json -e yaml | fzf --preview 'bat --color=always {} --style=numbers'
+
+# Or with jq/yq preview
+fd -e json | fzf --preview 'jq . {}'
+fd -e yaml | fzf --preview 'yq . {}'
+```
+
+### 4. Find Related Code
+
+```bash
+# Find a class definition, then find all its usages
+CLASS=$(ast-grep --pattern 'class $NAME:' -l py | fzf | cut -d: -f2)
+rg -w "$CLASS" --type py
+```
+
+### 5. Dependency Analysis
+
+```bash
+# Find all imports of a module
+ast-grep --pattern 'from mymodule import $$$' -l py -t python
+
+# Combine with text search for dynamic imports
+rg 'importlib.*mymodule' -t py
+```
+
+### 6. Multi-File Search and Replace
+
+```bash
+# Find files with pattern, select multiple, and apply changes
+rg -l 'TODO.*urgent' | fzf -m | xargs sed -i '' 's/TODO.*urgent/DONE/g'
+```
+
+### 7. Code Structure Analysis
+
+```bash
+# Find all functions in a module, count them
+ast-grep --pattern 'def $FUNC($$$)' -l py src/module.py | wc -l
+
+# Find function complexity (functions with many parameters)
+ast-grep --pattern 'def $FUNC($A, $B, $C, $D, $E, $$$)' -l py
+```
+
+See `scripts/combo-search.sh` and `scripts/interactive-code-finder.sh` for reusable combination workflows.
+
+## Best Practices
+
+### Performance Tips
+
+1. **Use the right tool for the job:**
+   - File names → `fd`
+   - Text content → `rg`
+   - Code structure → `ast-grep`
+
+2. **Narrow your search scope:**
+   ```bash
+   # Good: Search specific directory
+   rg 'pattern' src/
+
+   # Better: Search specific file types
+   rg 'pattern' -t py src/
+   ```
+
+3. **Use `.gitignore` respect:**
+   - Both `fd` and `rg` respect `.gitignore` by default
+   - Use `-u` or `--no-ignore` to override when needed
+
+### Pattern Matching Tips
+
+1. **ast-grep patterns:**
+   - Use `$VAR` for single identifiers
+   - Use `$$$` for arbitrary code sequences
+   - Use `$$` for statement lists
+
+2. **ripgrep regex:**
+   - Use `-F` for literal strings (faster)
+   - Use `-w` for whole words
+   - Use `\b` for word boundaries
+
+3. **fzf fuzzy matching:**
+   - Space for AND search: `foo bar` matches files with both
+   - `|` for OR search: `foo|bar`
+   - `^` for prefix match, `$` for suffix match
+
+### Debugging Searches
+
+```bash
+# See what rg is searching
+rg --debug 'pattern' 2>&1 | head -20
+
+# Dry-run ast-grep refactoring
+ast-grep --pattern 'old' --rewrite 'new' --interactive
+
+# Test jq queries incrementally
+echo '{"name":"test"}' | jq .
+echo '{"name":"test"}' | jq '.name'
+```
+
+## Resources
+
+This skill includes bundled resources to support CLI navigation:
+
+### scripts/
+
+Example scripts demonstrating tool combinations:
+
+- `combo-search.sh` - Common combination workflows
+- `interactive-code-finder.sh` - Interactive ast-grep + fzf workflow
+
+### references/
+
+Comprehensive guides for each tool:
+
+- `fd-patterns.md` - File finding patterns and flags
+- `rg-patterns.md` - Text search patterns and regex tips
+- `ast-grep-guide.md` - Code structure patterns for Python, Zig, Go, Ruby, JS/TS, Rust
+- `fzf-workflows.md` - Interactive selection and preview configurations
+- `jq-cookbook.md` - JSON transformations and filters
+- `yq-examples.md` - YAML/XML processing examples
diff --git a/plugin.lock.json b/plugin.lock.json
new file mode 100644
index 0000000..62e2a80
--- /dev/null
+++ b/plugin.lock.json
@@ -0,0 +1,77 @@
+{
+  "$schema": "internal://schemas/plugin.lock.v1.json",
+  "pluginId": "gh:pythoninthegrass/cli-ninja:cli-ninja",
+  "normalized": {
+    "repo": null,
+    "ref": "refs/tags/v20251128.0",
+    "commit": "a20e7b3373b41171100bffe83f9d51875dc770e1",
+    "treeHash": "f975f1775bfc70bc6ba04673373843287d4c39ec40e06920c8a02aec140c224e",
+    "generatedAt": "2025-11-28T10:27:42.424911Z",
+    "toolVersion": "publish_plugins.py@0.2.0"
+  },
+  "origin": {
+    "remote": "git@github.com:zhongweili/42plugin-data.git",
+    "branch": "master",
+    "commit": "aa1497ed0949fd50e99e70d6324a29c5b34f9390",
+    "repoRoot": "/Users/zhongweili/projects/openmind/42plugin-data"
+  },
+  "manifest": {
+    "name": "cli-ninja",
+    "description": "Master CLI navigation and code exploration using modern command-line tools (fd, rg, ast-grep, fzf, jq, yq)",
+    "version": "0.1.1"
+  },
+  "content": {
+    "files": [
+      {
+        "path": "README.md",
+        "sha256": "2b48fd08069259ae5df45b55ac4089b43bcb5c85dbcd248351588c17d18a1623"
+      },
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+        "path": "SKILL.md",
+        "sha256": "8092b5ec021baf61c1380305c0cba776eb6951bca2dd70a5fbe587938305fe13"
+      },
+      {
+        "path": "references/fzf-workflows.md",
+        "sha256": "ccb1f98dfd990fcb61e7d22a7b84fc8e39cb71ee18412ba4765d27da95481907"
+      },
+      {
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+        "sha256": "c9d285023eb62fc76c7b57a8b80245b41ee2ae12481dcf29d191473c724a4f06"
+      },
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+        "sha256": "a30432790d889a3b3ed72fc6145510f8fcedd7b598830ffca0486d3a7139d25d"
+      },
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+        "sha256": "f1035915e749cb214b8ea603d7851e67e5881f1f28b6df6df865a5f778b49ce6"
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+        "sha256": "85aac5efca24cc69cfca9b9a7c594d1f31b625c2f043607fd7d9555ee4a35b09"
+      },
+      {
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+        "sha256": "2b545e560b6e29fbae8b070bed84e0ed355151331ae23015fbcc4edd484797ff"
+      },
+      {
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+        "sha256": "f7e79545b424c43f33e43611388a26e40e62fd0395f35a58217c40c7c5133e05"
+      },
+      {
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+    ],
+    "dirSha256": "f975f1775bfc70bc6ba04673373843287d4c39ec40e06920c8a02aec140c224e"
+  },
+  "security": {
+    "scannedAt": null,
+    "scannerVersion": null,
+    "flags": []
+  }
+}
\ No newline at end of file
diff --git a/references/ast-grep-guide.md b/references/ast-grep-guide.md
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index 0000000..2a9e110
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+++ b/references/ast-grep-guide.md
@@ -0,0 +1,680 @@
+# ast-grep - Code Structure Search Guide
+
+## Overview
+
+`ast-grep` searches code by Abstract Syntax Tree (AST) structure, not text. It understands code semantics and can find patterns that are impossible with regex.
+
+## Core Concepts
+
+### Pattern Syntax
+
+- `$VAR` - Matches a single AST node (identifier, expression, etc.)
+- `$$$` - Matches zero or more nodes (variadic)
+- `$$` - Matches a sequence of statements
+
+### Pattern Matching Philosophy
+
+ast-grep matches **structure**, not **text**:
+
+```bash
+# This finds ALL function calls to 'print', regardless of arguments
+ast-grep --pattern 'print($$$)'
+
+# Matches:
+# print()
+# print("hello")
+# print("hello", "world")
+# print(x, y, z)
+```
+
+## Language Support
+
+ast-grep supports: Python, JavaScript, TypeScript, Rust, Go, Java, C, C++, C#, Ruby, Kotlin, Swift, and more.
+
+---
+
+## Python Patterns
+
+### Function Definitions
+
+```bash
+# Any function
+ast-grep --pattern 'def $FUNC($$$): $$$' -l py
+
+# Functions with no parameters
+ast-grep --pattern 'def $FUNC(): $$$' -l py
+
+# Functions with specific number of parameters
+ast-grep --pattern 'def $FUNC($A, $B): $$$' -l py
+
+# Functions with type hints
+ast-grep --pattern 'def $FUNC($$$) -> $TYPE: $$$' -l py
+
+# Async functions
+ast-grep --pattern 'async def $FUNC($$$): $$$' -l py
+
+# Methods (functions with self)
+ast-grep --pattern 'def $METHOD(self, $$$): $$$' -l py
+
+# Class methods
+ast-grep --pattern '@classmethod' -A 1 -l py
+
+# Static methods
+ast-grep --pattern '@staticmethod' -A 1 -l py
+```
+
+### Class Definitions
+
+```bash
+# Any class
+ast-grep --pattern 'class $CLASS: $$$' -l py
+
+# Class with inheritance
+ast-grep --pattern 'class $CLASS($BASE): $$$' -l py
+
+# Class with multiple inheritance
+ast-grep --pattern 'class $CLASS($$$): $$$' -l py
+
+# Dataclass
+ast-grep --pattern '@dataclass' -A 1 -l py
+```
+
+### Imports
+
+```bash
+# Import statements
+ast-grep --pattern 'import $MODULE' -l py
+
+# From imports
+ast-grep --pattern 'from $MODULE import $$$' -l py
+
+# Specific import
+ast-grep --pattern 'from $MODULE import $NAME' -l py
+
+# Relative imports
+ast-grep --pattern 'from . import $$$' -l py
+ast-grep --pattern 'from .. import $$$' -l py
+
+# Import aliases
+ast-grep --pattern 'import $MODULE as $ALIAS' -l py
+```
+
+### Function Calls
+
+```bash
+# Any call to a function
+ast-grep --pattern '$FUNC($$$)' -l py
+
+# Method calls
+ast-grep --pattern '$OBJ.$METHOD($$$)' -l py
+
+# Chained method calls
+ast-grep --pattern '$OBJ.$M1().$M2($$$)' -l py
+
+# Specific function calls
+ast-grep --pattern 'print($$$)' -l py
+ast-grep --pattern 'open($$$)' -l py
+```
+
+### Control Flow
+
+```bash
+# If statements
+ast-grep --pattern 'if $COND: $$$' -l py
+
+# For loops
+ast-grep --pattern 'for $VAR in $ITER: $$$' -l py
+
+# While loops
+ast-grep --pattern 'while $COND: $$$' -l py
+
+# Try/except
+ast-grep --pattern 'try: $$$ except $EXC: $$$' -l py
+
+# Context managers
+ast-grep --pattern 'with $EXPR as $VAR: $$$' -l py
+```
+
+### Decorators
+
+```bash
+# Any decorator
+ast-grep --pattern '@$DECORATOR' -l py
+
+# Specific decorator
+ast-grep --pattern '@property' -l py
+ast-grep --pattern '@staticmethod' -l py
+
+# Decorator with arguments
+ast-grep --pattern '@$DECORATOR($$$)' -l py
+```
+
+---
+
+## JavaScript/TypeScript Patterns
+
+### Function Definitions
+
+```bash
+# Function declarations
+ast-grep --pattern 'function $FUNC($$$) { $$$ }' -l js
+
+# Arrow functions
+ast-grep --pattern '($$$) => $BODY' -l js
+ast-grep --pattern '$VAR = ($$$) => { $$$ }' -l js
+
+# Async functions
+ast-grep --pattern 'async function $FUNC($$$) { $$$ }' -l js
+ast-grep --pattern 'async ($$$) => $BODY' -l js
+
+# Generator functions
+ast-grep --pattern 'function* $FUNC($$$) { $$$ }' -l js
+```
+
+### Class and Components
+
+```bash
+# Class declarations
+ast-grep --pattern 'class $CLASS { $$$ }' -l js
+
+# Class with extends
+ast-grep --pattern 'class $CLASS extends $BASE { $$$ }' -l js
+
+# React functional components
+ast-grep --pattern 'function $COMP() { $$$ }' -l tsx
+ast-grep --pattern 'const $COMP = () => { $$$ }' -l tsx
+
+# React class components
+ast-grep --pattern 'class $COMP extends React.Component { $$$ }' -l tsx
+```
+
+### Imports/Exports
+
+```bash
+# Import statements
+ast-grep --pattern 'import $$ from "$MODULE"' -l js
+
+# Named imports
+ast-grep --pattern 'import { $$ } from "$MODULE"' -l js
+
+# Default import
+ast-grep --pattern 'import $DEFAULT from "$MODULE"' -l js
+
+# Require (CommonJS)
+ast-grep --pattern 'require("$MODULE")' -l js
+
+# Export default
+ast-grep --pattern 'export default $EXPR' -l js
+
+# Named exports
+ast-grep --pattern 'export { $$ }' -l js
+```
+
+### React Hooks
+
+```bash
+# useState
+ast-grep --pattern 'const [$STATE, $SETTER] = useState($$$)' -l tsx
+
+# useEffect
+ast-grep --pattern 'useEffect($$$)' -l tsx
+
+# useCallback
+ast-grep --pattern 'useCallback($$$)' -l tsx
+
+# useMemo
+ast-grep --pattern 'useMemo($$$)' -l tsx
+
+# Custom hooks (by convention)
+ast-grep --pattern 'function use$HOOK($$$) { $$$ }' -l tsx
+```
+
+### TypeScript Specifics
+
+```bash
+# Type definitions
+ast-grep --pattern 'type $NAME = $TYPE' -l ts
+
+# Interface definitions
+ast-grep --pattern 'interface $NAME { $$$ }' -l ts
+
+# Type assertions
+ast-grep --pattern '$EXPR as $TYPE' -l ts
+
+# Generic functions
+ast-grep --pattern 'function $FUNC<$$$>($$$) { $$$ }' -l ts
+```
+
+---
+
+## Rust Patterns
+
+### Function Definitions
+
+```bash
+# Function declarations
+ast-grep --pattern 'fn $FUNC($$$) { $$$ }' -l rs
+
+# Functions with return type
+ast-grep --pattern 'fn $FUNC($$$) -> $TYPE { $$$ }' -l rs
+
+# Public functions
+ast-grep --pattern 'pub fn $FUNC($$$) { $$$ }' -l rs
+
+# Async functions
+ast-grep --pattern 'async fn $FUNC($$$) { $$$ }' -l rs
+
+# Unsafe functions
+ast-grep --pattern 'unsafe fn $FUNC($$$) { $$$ }' -l rs
+```
+
+### Structs and Enums
+
+```bash
+# Struct definitions
+ast-grep --pattern 'struct $NAME { $$$ }' -l rs
+
+# Tuple structs
+ast-grep --pattern 'struct $NAME($$$);' -l rs
+
+# Enum definitions
+ast-grep --pattern 'enum $NAME { $$$ }' -l rs
+
+# Public structs
+ast-grep --pattern 'pub struct $NAME { $$$ }' -l rs
+```
+
+### Impl Blocks
+
+```bash
+# Implementation blocks
+ast-grep --pattern 'impl $TYPE { $$$ }' -l rs
+
+# Trait implementations
+ast-grep --pattern 'impl $TRAIT for $TYPE { $$$ }' -l rs
+
+# Generic implementations
+ast-grep --pattern 'impl<$$$> $TYPE { $$$ }' -l rs
+```
+
+### Macros
+
+```bash
+# Macro usage
+ast-grep --pattern '$MACRO!($$$)' -l rs
+
+# Specific macros
+ast-grep --pattern 'println!($$$)' -l rs
+ast-grep --pattern 'vec![$$$]' -l rs
+
+# Macro definitions
+ast-grep --pattern 'macro_rules! $NAME { $$$ }' -l rs
+```
+
+### Error Handling
+
+```bash
+# Result returns
+ast-grep --pattern 'fn $FUNC($$$) -> Result<$$$> { $$$ }' -l rs
+
+# Unwrap calls
+ast-grep --pattern '$EXPR.unwrap()' -l rs
+
+# Question mark operator
+ast-grep --pattern '$EXPR?' -l rs
+
+# Match Result
+ast-grep --pattern 'match $EXPR { Ok($VAL) => $$$, Err($ERR) => $$$ }' -l rs
+```
+
+---
+
+## Go Patterns
+
+### Function Definitions
+
+```bash
+# Function declarations
+ast-grep --pattern 'func $FUNC($$$) $$$ { $$$ }' -l go
+
+# Methods
+ast-grep --pattern 'func ($RECV $TYPE) $METHOD($$$) $$$ { $$$ }' -l go
+
+# Functions with multiple returns
+ast-grep --pattern 'func $FUNC($$$) ($$$, error) { $$$ }' -l go
+```
+
+### Struct and Interface
+
+```bash
+# Struct definitions
+ast-grep --pattern 'type $NAME struct { $$$ }' -l go
+
+# Interface definitions
+ast-grep --pattern 'type $NAME interface { $$$ }' -l go
+
+# Type aliases
+ast-grep --pattern 'type $NAME $TYPE' -l go
+```
+
+### Concurrency
+
+```bash
+# Goroutine launches
+ast-grep --pattern 'go $FUNC($$$)' -l go
+
+# Channel operations
+ast-grep --pattern '$CHAN <- $VALUE' -l go
+ast-grep --pattern '$VAR := <-$CHAN' -l go
+
+# Select statements
+ast-grep --pattern 'select { $$$ }' -l go
+```
+
+### Error Handling
+
+```bash
+# If err check
+ast-grep --pattern 'if err != nil { $$$ }' -l go
+
+# Error returns
+ast-grep --pattern 'return $$$, err' -l go
+
+# Defer statements
+ast-grep --pattern 'defer $FUNC($$$)' -l go
+```
+
+---
+
+## Zig Patterns
+
+### Function Definitions
+
+```bash
+# Public functions
+ast-grep --pattern 'pub fn $FUNC($$$) $$$ { $$$ }' -l zig
+
+# Private functions
+ast-grep --pattern 'fn $FUNC($$$) $$$ { $$$ }' -l zig
+
+# Exported functions
+ast-grep --pattern 'export fn $FUNC($$$) $$$ { $$$ }' -l zig
+```
+
+### Structs and Types
+
+```bash
+# Struct definitions
+ast-grep --pattern 'const $NAME = struct { $$$ };' -l zig
+
+# Packed structs
+ast-grep --pattern 'const $NAME = packed struct { $$$ };' -l zig
+
+# Type definitions
+ast-grep --pattern 'const $NAME = $TYPE;' -l zig
+```
+
+### Error Handling
+
+```bash
+# Try expressions
+ast-grep --pattern 'try $EXPR' -l zig
+
+# Catch
+ast-grep --pattern '$EXPR catch $$$' -l zig
+
+# Error unions
+ast-grep --pattern 'fn $FUNC($$$) !$$$ { $$$ }' -l zig
+```
+
+### Testing
+
+```bash
+# Test blocks
+ast-grep --pattern 'test "$NAME" { $$$ }' -l zig
+
+# Expect calls
+ast-grep --pattern 'try testing.expect($$$)' -l zig
+```
+
+---
+
+## Ruby Patterns
+
+### Method Definitions
+
+```bash
+# Method definitions
+ast-grep --pattern 'def $METHOD($$$); $$$; end' -l rb
+
+# Class methods
+ast-grep --pattern 'def self.$METHOD($$$); $$$; end' -l rb
+
+# Private methods
+ast-grep --pattern 'private' -A 1 -l rb
+```
+
+### Classes and Modules
+
+```bash
+# Class definitions
+ast-grep --pattern 'class $CLASS; $$$; end' -l rb
+
+# Class with inheritance
+ast-grep --pattern 'class $CLASS < $BASE; $$$; end' -l rb
+
+# Module definitions
+ast-grep --pattern 'module $MODULE; $$$; end' -l rb
+```
+
+### Blocks and Iterators
+
+```bash
+# Blocks with do/end
+ast-grep --pattern '$EXPR do |$PARAM|; $$$; end' -l rb
+
+# Blocks with braces
+ast-grep --pattern '$EXPR { |$PARAM| $$$ }' -l rb
+
+# Each iterator
+ast-grep --pattern '$COLLECTION.each do |$ITEM|; $$$; end' -l rb
+
+# Map
+ast-grep --pattern '$COLLECTION.map { |$ITEM| $$$ }' -l rb
+```
+
+### Rails Patterns
+
+```bash
+# Route definitions
+ast-grep --pattern 'get "$PATH", to: "$HANDLER"' -l rb
+ast-grep --pattern 'post "$PATH", to: "$HANDLER"' -l rb
+
+# ActiveRecord queries
+ast-grep --pattern '$MODEL.where($$$)' -l rb
+ast-grep --pattern '$MODEL.find_by($$$)' -l rb
+
+# Validations
+ast-grep --pattern 'validates $$$' -l rb
+```
+
+---
+
+## Advanced Usage
+
+### Refactoring
+
+```bash
+# Rename function
+ast-grep --pattern 'old_function($$$)' \
+         --rewrite 'new_function($$$)' \
+         -l py --interactive
+
+# Update API version
+ast-grep --pattern 'api.v1.$METHOD($$$)' \
+         --rewrite 'api.v2.$METHOD($$$)' \
+         -l py
+
+# Modernize var to const
+ast-grep --pattern 'var $VAR = $EXPR' \
+         --rewrite 'const $VAR = $EXPR' \
+         -l js --interactive
+
+# Add type annotations
+ast-grep --pattern 'def $FUNC($PARAM):' \
+         --rewrite 'def $FUNC($PARAM: Any):' \
+         -l py
+```
+
+### Multi-Pattern Search
+
+```bash
+# Search with multiple patterns (OR)
+ast-grep --pattern 'print($$$)' -l py && \
+ast-grep --pattern 'logging.$METHOD($$$)' -l py
+
+# Chain searches (AND)
+ast-grep --pattern 'def $FUNC($$$):' -l py | \
+  grep -v test | \
+  xargs -I {} ast-grep --pattern 'return $$$' {}
+```
+
+### Complex Patterns
+
+```bash
+# Find functions with many parameters (code smell)
+ast-grep --pattern 'def $FUNC($A, $B, $C, $D, $E, $$$):' -l py
+
+# Find deeply nested function calls
+ast-grep --pattern '$A($B($C($$$)))' -l py
+
+# Find unused variables (assigned but not used)
+ast-grep --pattern '$VAR = $$$' -l py  # Then analyze
+
+# Find mutable default arguments (Python anti-pattern)
+ast-grep --pattern 'def $FUNC($PARAM=[]):' -l py
+ast-grep --pattern 'def $FUNC($PARAM={}):' -l py
+```
+
+### Debugging Patterns
+
+```bash
+# Find console.log statements
+ast-grep --pattern 'console.log($$$)' -l js
+
+# Find debugger statements
+ast-grep --pattern 'debugger' -l js
+
+# Find print debugging
+ast-grep --pattern 'print($$$)' -l py
+
+# Find TODO comments in code (not comments, but in strings)
+ast-grep --pattern '"TODO: $$$"' -l py
+```
+
+## Rule Files
+
+Create reusable rules in YAML:
+
+```yaml
+# rules.yml
+id: no-mutable-default
+language: python
+rule:
+  pattern: 'def $FUNC($$$, $PARAM=[], $$$):'
+message: Avoid mutable default arguments
+severity: warning
+```
+
+Use with:
+```bash
+ast-grep scan --rule rules.yml
+```
+
+## Configuration
+
+Create `.ast-grep.yml` in project root:
+
+```yaml
+ruleDirs:
+  - rules
+testDirs:
+  - tests
+ignore:
+  - node_modules
+  - .venv
+  - dist
+```
+
+## Performance Tips
+
+1. **Use language specification**: `-l py` is more accurate
+2. **Narrow scope**: Search specific directories
+3. **Use specific patterns**: More specific = faster
+4. **Cache results**: Output to file for repeated analysis
+
+## Interactive Workflows
+
+```bash
+# Find and select function to edit
+ast-grep --pattern 'def $FUNC($$$):' -l py | \
+  fzf --preview 'bat --color=always {1}' | \
+  cut -d: -f1 | \
+  xargs $EDITOR
+
+# Find usages and refactor
+ast-grep --pattern 'old_name($$$)' -l py | \
+  fzf -m | \
+  xargs ast-grep --pattern 'old_name($$$)' --rewrite 'new_name($$$)' --interactive
+```
+
+## Tips and Tricks
+
+### Finding Security Issues
+
+```bash
+# SQL injection risks
+ast-grep --pattern 'execute("$$$" + $VAR)' -l py
+
+# XSS risks
+ast-grep --pattern 'innerHTML = $$$' -l js
+
+# Command injection
+ast-grep --pattern 'os.system($$$)' -l py
+```
+
+### Code Quality Analysis
+
+```bash
+# Find long functions (structural complexity)
+ast-grep --pattern 'def $FUNC($$$): $$$' -l py | \
+  awk -F: '{print $1":"$2}' | \
+  xargs -I {} sh -c 'echo {}; sed -n "{}p" | wc -l'
+
+# Find classes with many methods
+ast-grep --pattern 'class $CLASS: $$$' -l py
+
+# Find deeply nested code
+ast-grep --pattern 'if $A: if $B: if $C: $$$' -l py
+```
+
+### Documentation
+
+```bash
+# Find undocumented functions
+ast-grep --pattern 'def $FUNC($$$):' -l py | \
+  xargs rg -L '"""'  # Functions without docstrings
+
+# Find public APIs
+ast-grep --pattern 'export function $FUNC($$$) { $$$ }' -l ts
+```
+
+## Comparison with grep/rg
+
+| Task | grep/rg | ast-grep |
+|------|---------|----------|
+| Find string "print" | `rg print` | N/A |
+| Find print function calls | `rg 'print\('` (fragile) | `ast-grep --pattern 'print($$$)'` |
+| Find function definitions | `rg '^def '` (limited) | `ast-grep --pattern 'def $F($$$):'` |
+| Rename function | Complex sed | `--rewrite` flag |
+| Find by structure | Not possible | Native |
diff --git a/references/fd-patterns.md b/references/fd-patterns.md
new file mode 100644
index 0000000..8f53fc2
--- /dev/null
+++ b/references/fd-patterns.md
@@ -0,0 +1,290 @@
+# fd - File Finding Patterns
+
+## Overview
+
+`fd` is a fast, user-friendly alternative to `find`. It respects `.gitignore` by default and uses intuitive patterns.
+
+## Basic Usage
+
+```bash
+# Find files/directories by name (case-insensitive by default)
+fd pattern
+
+# Case-sensitive search
+fd -s Pattern
+
+# Case-insensitive explicitly
+fd -i pattern
+```
+
+## File Type Filtering
+
+```bash
+# By extension
+fd -e py           # All .py files
+fd -e js -e ts     # Multiple extensions
+
+# By type
+fd -t f            # Files only
+fd -t d            # Directories only
+fd -t l            # Symlinks only
+fd -t x            # Executable files only
+
+# Combine type and extension
+fd -t f -e py      # Python files only
+```
+
+## Search Scope
+
+```bash
+# Search in specific directory
+fd pattern /path/to/dir
+
+# Multiple directories
+fd pattern dir1/ dir2/
+
+# Depth control
+fd -d 1 pattern    # Current directory only
+fd -d 3 pattern    # Up to 3 levels deep
+fd --max-depth 2   # Alternative syntax
+```
+
+## Advanced Filtering
+
+### By Size
+
+```bash
+# Files larger than 100MB
+fd -t f --size +100m
+
+# Files smaller than 1KB
+fd -t f --size -1k
+
+# Files between 10KB and 1MB
+fd -t f --size +10k --size -1m
+```
+
+### By Time
+
+```bash
+# Modified in last 7 days
+fd --changed-within 7d
+
+# Modified more than 30 days ago
+fd --changed-before 30d
+
+# Specific date ranges
+fd --changed-within 2024-01-01..2024-12-31
+```
+
+### Hidden and Ignored Files
+
+```bash
+# Include hidden files
+fd -H pattern
+
+# Ignore .gitignore rules
+fd -u pattern
+
+# Both hidden and ignored
+fd -Hu pattern
+
+# Search in .git directories
+fd -H -u -I pattern
+```
+
+## Exclusion Patterns
+
+```bash
+# Exclude specific patterns
+fd -E '*.pyc' -E '__pycache__' pattern
+
+# Exclude directories
+fd -E 'node_modules' -E '.git' pattern
+
+# Multiple exclusions
+fd -e py -E '*test*' -E '*_pb2.py'
+```
+
+## Output Formatting
+
+```bash
+# Full paths
+fd -a pattern
+
+# Relative paths (default)
+fd pattern
+
+# Print absolute paths
+fd -p pattern
+
+# Null-separated output (for xargs -0)
+fd -0 pattern
+```
+
+## Pattern Matching
+
+```bash
+# Exact name match
+fd -g 'config.json'
+
+# Wildcard patterns
+fd -g '*.test.js'
+fd -g 'test_*.py'
+
+# Regex mode (default)
+fd '^[A-Z].*\.py$'
+
+# Fixed string (faster)
+fd -F 'literal.string'
+```
+
+## Execution
+
+```bash
+# Execute command on each result
+fd -e py -x python -m py_compile {}
+
+# Execute with multiple files
+fd -e txt -X cat
+
+# Execute with placeholders
+fd -e md -x echo "File: {}" "Path: {/}" "Dir: {//}"
+
+# Parallel execution
+fd -e py -x -j 4 pylint {}
+```
+
+## Common Workflows
+
+### Find and Edit
+
+```bash
+# Find and edit config files
+fd config | fzf | xargs $EDITOR
+
+# Find recent Python files and edit
+fd -e py --changed-within 1d | fzf | xargs $EDITOR
+```
+
+### Find and Delete
+
+```bash
+# Find and remove cache files
+fd -e pyc -X rm
+fd -t d __pycache__ -X rm -rf
+
+# Interactive deletion
+fd '*.log' -x rm -i {}
+```
+
+### Find and Copy
+
+```bash
+# Copy all Python files to backup
+fd -e py -X cp -t backup/
+
+# Copy with directory structure
+fd -e py -x cp --parents {} backup/
+```
+
+### Statistics and Analysis
+
+```bash
+# Count files by type
+fd -e py | wc -l
+
+# List largest files
+fd -t f --size +1m -x ls -lh {} | sort -k5 -hr
+
+# Find duplicate filenames
+fd | awk -F/ '{print $NF}' | sort | uniq -d
+```
+
+## Performance Tips
+
+1. **Narrow scope early**: Use `-d` to limit depth, `-t` to filter type
+2. **Use specific patterns**: More specific patterns are faster
+3. **Respect .gitignore**: Default behavior is already optimized
+4. **Use fixed strings**: `-F` is faster than regex when possible
+
+## Common Use Cases
+
+### Development
+
+```bash
+# Find test files
+fd test -e py
+fd -g '*_test.go'
+fd -g '*.test.ts'
+
+# Find configuration files
+fd -e json -e yaml -e toml config
+
+# Find source files excluding tests
+fd -e py -E '*test*'
+
+# Find files modified today
+fd --changed-within 1d
+```
+
+### Documentation
+
+```bash
+# Find all markdown files
+fd -e md
+
+# Find README files
+fd -i readme
+
+# Find documentation directories
+fd -t d docs
+```
+
+### Build Artifacts
+
+```bash
+# Find compiled files
+fd -e o -e so -e dylib
+
+# Find build directories
+fd -t d -g 'build' -g 'dist' -g 'target'
+
+# Find and clean
+fd -e pyc -E '.venv' -X rm
+```
+
+## Comparison with find
+
+| Task | find | fd |
+|------|------|-----|
+| Find by name | `find . -name '*.py'` | `fd -e py` |
+| Files only | `find . -type f` | `fd -t f` |
+| Max depth | `find . -maxdepth 2` | `fd -d 2` |
+| Exclude pattern | `find . ! -path '*/test/*'` | `fd -E '*test*'` |
+| Execute command | `find . -name '*.py' -exec python {} \;` | `fd -e py -x python {}` |
+
+## Tips and Tricks
+
+1. **Combine with other tools**:
+   ```bash
+   fd -e py | xargs wc -l        # Count lines
+   fd -e md | xargs grip -b      # Preview markdown
+   fd -0 | xargs -0 tar czf      # Create archive
+   ```
+
+2. **Use shell aliases**:
+   ```bash
+   alias fdd='fd -t d'           # Directories only
+   alias fdf='fd -t f'           # Files only
+   alias fdh='fd -H'             # Include hidden
+   ```
+
+3. **Create functions**:
+   ```bash
+   # Find and cd into directory
+   fcd() { cd $(fd -t d "$1" | fzf) }
+
+   # Find and open in editor
+   fe() { $EDITOR $(fd "$1" | fzf) }
+   ```
diff --git a/references/fzf-workflows.md b/references/fzf-workflows.md
new file mode 100644
index 0000000..4f28c18
--- /dev/null
+++ b/references/fzf-workflows.md
@@ -0,0 +1,589 @@
+# fzf - Interactive Selection Workflows
+
+## Overview
+
+`fzf` is a command-line fuzzy finder that enables interactive selection from lists. It's a powerful tool for building interactive workflows.
+
+## Basic Usage
+
+```bash
+# Pipe any list to fzf
+ls | fzf
+
+# Multi-select with Tab
+ls | fzf -m
+
+# Use selected result
+SELECTED=$(ls | fzf)
+echo "You selected: $SELECTED"
+```
+
+## Preview Windows
+
+### Basic Preview
+
+```bash
+# Preview with cat
+fd | fzf --preview 'cat {}'
+
+# Preview with bat (syntax highlighting)
+fd | fzf --preview 'bat --color=always {}'
+
+# Preview with line numbers
+fd | fzf --preview 'bat --color=always --line-range :500 {}'
+```
+
+### Preview Window Configuration
+
+```bash
+# Position and size
+fzf --preview 'cat {}' --preview-window=right:50%
+fzf --preview 'cat {}' --preview-window=up:40%
+fzf --preview 'cat {}' --preview-window=down:30%
+fzf --preview 'cat {}' --preview-window=left:50%
+
+# Hidden by default (toggle with ctrl-/)
+fzf --preview 'cat {}' --preview-window=hidden
+
+# Wrap text
+fzf --preview 'cat {}' --preview-window=wrap
+
+# No wrap (default)
+fzf --preview 'cat {}' --preview-window=nowrap
+```
+
+### Advanced Previews
+
+```bash
+# Preview with highlighted search term
+rg --line-number 'pattern' | \
+  fzf --delimiter : \
+      --preview 'bat --color=always {1} --highlight-line {2}'
+
+# Preview JSON with jq
+fd -e json | fzf --preview 'jq --color-output . {}'
+
+# Preview images (requires chafa/imgcat)
+fd -e png -e jpg | fzf --preview 'chafa {}'
+
+# Preview directories
+fd -t d | fzf --preview 'ls -la {}'
+
+# Preview with tree
+fd -t d | fzf --preview 'tree -L 2 {}'
+
+# Multi-level preview (file type detection)
+fd | fzf --preview '[[ -f {} ]] && bat --color=always {} || tree -L 1 {}'
+```
+
+## Keybindings
+
+### Default Keybindings
+
+```
+ctrl-j / ctrl-n / down    : Move down
+ctrl-k / ctrl-p / up      : Move up
+enter                     : Select and exit
+tab                       : Mark item (multi-select)
+shift-tab                 : Unmark item
+ctrl-c / esc              : Exit without selection
+ctrl-/                    : Toggle preview window
+```
+
+### Custom Keybindings
+
+```bash
+# Copy to clipboard (macOS)
+fzf --bind 'ctrl-y:execute-silent(echo {} | pbcopy)'
+
+# Copy to clipboard (Linux)
+fzf --bind 'ctrl-y:execute-silent(echo {} | xclip -selection clipboard)'
+
+# Open in editor
+fzf --bind 'ctrl-e:execute($EDITOR {})'
+
+# Open in editor and exit
+fzf --bind 'ctrl-e:execute($EDITOR {})+abort'
+
+# Delete file with confirmation
+fzf --bind 'ctrl-d:execute(rm -i {})'
+
+# Multiple bindings
+fzf --bind 'ctrl-e:execute($EDITOR {})' \
+    --bind 'ctrl-y:execute-silent(echo {} | pbcopy)' \
+    --bind 'ctrl-d:execute(rm -i {})'
+```
+
+### Advanced Keybinding Actions
+
+```bash
+# Reload results
+fzf --bind 'ctrl-r:reload(fd)'
+
+# Change preview
+fzf --preview 'bat {}' \
+    --bind 'ctrl-/:change-preview-window(hidden|)'
+
+# Toggle between preview styles
+fzf --preview 'bat --color=always {}' \
+    --bind 'ctrl-t:change-preview(tree -L 2 {})'
+
+# Accept and execute
+fzf --bind 'enter:execute(echo Selected: {})+accept'
+```
+
+## Search Syntax
+
+### Fuzzy Matching
+
+```
+# Basic fuzzy search
+abc       # Matches files containing 'a', 'b', 'c' in order
+          # Examples: abc, aXXbXXc, axbxc
+
+# Exact match (single quote)
+'abc      # Matches files containing exact string "abc"
+
+# Prefix match (caret)
+^abc      # Matches files starting with "abc"
+
+# Suffix match (dollar)
+abc$      # Matches files ending with "abc"
+
+# Exact match (both)
+^abc$     # Matches exactly "abc"
+```
+
+### Logical Operators
+
+```
+# AND (space)
+abc def   # Contains both "abc" AND "def"
+
+# OR (pipe)
+abc|def   # Contains "abc" OR "def"
+
+# NOT (exclamation)
+abc !def  # Contains "abc" but NOT "def"
+
+# Combination
+abc def|ghi !jkl
+# Contains "abc" AND ("def" OR "ghi") but NOT "jkl"
+```
+
+### Field Selection
+
+```bash
+# Search specific field (delimiter-separated)
+# -d : Set delimiter
+# -n : Select field number (1-indexed)
+# --with-nth : Display specific fields
+
+# Example: search only filenames in paths
+fd | fzf -d / --with-nth -1
+
+# Example: search only line numbers
+rg --line-number 'pattern' | fzf -d : --with-nth 2
+```
+
+## Common Workflows
+
+### File Navigation
+
+```bash
+# Find and edit file
+fe() {
+  local file
+  file=$(fd --type f | fzf --preview 'bat --color=always {}')
+  [[ -n "$file" ]] && $EDITOR "$file"
+}
+
+# Find and cd to directory
+fcd() {
+  local dir
+  dir=$(fd --type d | fzf --preview 'tree -L 1 {}')
+  [[ -n "$dir" ]] && cd "$dir"
+}
+
+# Find file with content preview
+ff() {
+  local file
+  file=$(rg --files-with-matches "${1:-.}" | \
+    fzf --preview "rg --color=always --context 5 '$1' {}")
+  [[ -n "$file" ]] && $EDITOR "$file"
+}
+```
+
+### Code Search
+
+```bash
+# Search content and edit
+fzf_grep() {
+  local line
+  line=$(rg --line-number "$1" | \
+    fzf --delimiter : \
+        --preview 'bat --color=always {1} --highlight-line {2}' \
+        --preview-window +{2}-/2)
+
+  if [[ -n "$line" ]]; then
+    local file=$(echo "$line" | cut -d: -f1)
+    local lineno=$(echo "$line" | cut -d: -f2)
+    $EDITOR "+$lineno" "$file"
+  fi
+}
+
+# Find function definition and edit
+find_function() {
+  local result
+  result=$(ast-grep --pattern "def $1(\$\$\$):" | \
+    fzf --preview 'bat --color=always {1}')
+
+  if [[ -n "$result" ]]; then
+    local file=$(echo "$result" | cut -d: -f1)
+    $EDITOR "$file"
+  fi
+}
+```
+
+### Git Integration
+
+```bash
+# Interactive git add
+fga() {
+  git status --short | \
+    fzf -m --preview 'git diff --color=always {2}' | \
+    awk '{print $2}' | \
+    xargs git add
+}
+
+# Interactive git checkout
+fgco() {
+  git branch --all | \
+    grep -v HEAD | \
+    sed 's/^[* ]*//' | \
+    sed 's#remotes/origin/##' | \
+    sort -u | \
+    fzf --preview 'git log --oneline --color=always {}' | \
+    xargs git checkout
+}
+
+# Interactive git log
+fgl() {
+  git log --oneline --color=always | \
+    fzf --ansi --preview 'git show --color=always {1}' | \
+    awk '{print $1}' | \
+    xargs git show
+}
+
+# Interactive git diff
+fgd() {
+  git diff --name-only | \
+    fzf --preview 'git diff --color=always {}' | \
+    xargs git diff
+}
+```
+
+### Process Management
+
+```bash
+# Interactive kill
+fkill() {
+  local pid
+  pid=$(ps aux | \
+    sed 1d | \
+    fzf -m --header='Select process to kill' | \
+    awk '{print $2}')
+
+  if [[ -n "$pid" ]]; then
+    echo "$pid" | xargs kill -${1:-9}
+  fi
+}
+
+# Interactive lsof (find what's using a port)
+fport() {
+  local port
+  port=$(lsof -i -P -n | \
+    sed 1d | \
+    fzf --header='Select connection' | \
+    awk '{print $2}')
+
+  [[ -n "$port" ]] && echo "PID: $port"
+}
+```
+
+### Docker Integration
+
+```bash
+# Interactive container selection
+fdocker() {
+  docker ps -a | \
+    sed 1d | \
+    fzf --header='Select container' | \
+    awk '{print $1}'
+}
+
+# Interactive container logs
+fdlogs() {
+  local container
+  container=$(fdocker)
+  [[ -n "$container" ]] && docker logs -f "$container"
+}
+
+# Interactive container exec
+fdexec() {
+  local container
+  container=$(fdocker)
+  [[ -n "$container" ]] && docker exec -it "$container" /bin/bash
+}
+```
+
+### Package Management
+
+```bash
+# Interactive npm script runner
+fnpm() {
+  local script
+  script=$(cat package.json | \
+    jq -r '.scripts | keys[]' | \
+    fzf --preview 'jq -r ".scripts.{}" package.json')
+
+  [[ -n "$script" ]] && npm run "$script"
+}
+
+# Interactive pip package info
+fpip() {
+  pip list | \
+    fzf --preview 'pip show {1}'
+}
+```
+
+### Configuration Files
+
+```bash
+# Edit config file
+fconf() {
+  local file
+  file=$(fd -H -t f \
+    -e conf -e config -e json -e yaml -e yml -e toml -e ini \
+    . "$HOME/.config" | \
+    fzf --preview 'bat --color=always {}')
+
+  [[ -n "$file" ]] && $EDITOR "$file"
+}
+
+# Edit dotfile
+fdot() {
+  local file
+  file=$(fd -H -t f '^\..*' "$HOME" --max-depth 1 | \
+    fzf --preview 'bat --color=always {}')
+
+  [[ -n "$file" ]] && $EDITOR "$file"
+}
+```
+
+## Advanced Configurations
+
+### Color Schemes
+
+```bash
+# Monokai
+export FZF_DEFAULT_OPTS='
+  --color=fg:#f8f8f2,bg:#272822,hl:#66d9ef
+  --color=fg+:#f8f8f2,bg+:#44475a,hl+:#66d9ef
+  --color=info:#a6e22e,prompt:#f92672,pointer:#f92672
+  --color=marker:#f92672,spinner:#a6e22e,header:#6272a4
+'
+
+# Nord
+export FZF_DEFAULT_OPTS='
+  --color=fg:#e5e9f0,bg:#3b4252,hl:#81a1c1
+  --color=fg+:#e5e9f0,bg+:#434c5e,hl+:#81a1c1
+  --color=info:#eacb8a,prompt:#bf616a,pointer:#b48ead
+  --color=marker:#a3be8b,spinner:#b48ead,header:#a3be8b
+'
+
+# Tokyo Night
+export FZF_DEFAULT_OPTS='
+  --color=fg:#c0caf5,bg:#1a1b26,hl:#bb9af7
+  --color=fg+:#c0caf5,bg+:#292e42,hl+:#7dcfff
+  --color=info:#7aa2f7,prompt:#7dcfff,pointer:#7dcfff
+  --color=marker:#9ece6a,spinner:#9ece6a,header:#9ece6a
+'
+```
+
+### Layout Options
+
+```bash
+# Reverse layout (prompt at top)
+fzf --reverse
+
+# Full screen
+fzf --height=100%
+
+# 40% of screen
+fzf --height=40%
+
+# Border
+fzf --border
+fzf --border=rounded
+fzf --border=sharp
+
+# Inline info
+fzf --inline-info
+
+# No info
+fzf --no-info
+```
+
+### Performance Options
+
+```bash
+# Limit results
+fzf --select-1      # Auto-select if only one match
+fzf --exit-0        # Exit if no match
+
+# Algorithm
+fzf --algo=v1       # Faster, less accurate
+fzf --algo=v2       # Default, balanced
+
+# History
+fzf --history=/tmp/fzf-history
+```
+
+## Environment Variables
+
+```bash
+# Default command
+export FZF_DEFAULT_COMMAND='fd --type f --hidden --exclude .git'
+
+# Default options
+export FZF_DEFAULT_OPTS='
+  --height 40%
+  --layout=reverse
+  --border
+  --inline-info
+  --preview "bat --color=always --line-range :500 {}"
+  --bind ctrl-/:toggle-preview
+'
+
+# ctrl-t command (file widget)
+export FZF_CTRL_T_COMMAND="$FZF_DEFAULT_COMMAND"
+export FZF_CTRL_T_OPTS="
+  --preview 'bat --color=always --line-range :500 {}'
+  --bind 'ctrl-/:toggle-preview'
+"
+
+# alt-c command (directory widget)
+export FZF_ALT_C_COMMAND='fd --type d --hidden --exclude .git'
+export FZF_ALT_C_OPTS="
+  --preview 'tree -L 1 {}'
+"
+```
+
+## Shell Integration
+
+### Bash/Zsh Key Bindings
+
+```bash
+# Add to ~/.bashrc or ~/.zshrc
+source /usr/share/doc/fzf/examples/key-bindings.bash  # Bash
+source /usr/share/doc/fzf/examples/key-bindings.zsh   # Zsh
+
+# Or via package manager
+eval "$(fzf --bash)"  # Bash
+eval "$(fzf --zsh)"   # Zsh
+```
+
+Default bindings:
+
+- `ctrl-t`: Paste selected files
+- `ctrl-r`: Paste from command history
+- `alt-c`: cd into selected directory
+
+### Custom Shell Functions
+
+```bash
+# Add to ~/.bashrc or ~/.zshrc
+
+# fh - repeat history
+fh() {
+  print -z $( ([ -n "$ZSH_NAME" ] && fc -l 1 || history) | \
+    fzf +s --tac | \
+    sed -E 's/ *[0-9]*\*? *//' | \
+    sed -E 's/\\/\\\\/g')
+}
+
+# fbr - checkout git branch
+fbr() {
+  local branches branch
+  branches=$(git branch -vv) &&
+  branch=$(echo "$branches" | fzf +m) &&
+  git checkout $(echo "$branch" | awk '{print $1}' | sed "s/.* //")
+}
+
+# fshow - git commit browser
+fshow() {
+  git log --graph --color=always \
+      --format="%C(auto)%h%d %s %C(black)%C(bold)%cr" "$@" |
+  fzf --ansi --no-sort --reverse --tiebreak=index --bind=ctrl-s:toggle-sort \
+      --bind "ctrl-m:execute:
+                (grep -o '[a-f0-9]\{7\}' | head -1 |
+                xargs -I % sh -c 'git show --color=always % | less -R') << 'FZF-EOF'
+                {}
+FZF-EOF"
+}
+```
+
+## Tips and Tricks
+
+### Performance
+
+1. Use fd instead of find for FZF_DEFAULT_COMMAND
+2. Limit preview size with --line-range
+3. Use --select-1 and --exit-0 for automation
+4. Cache results for repeated searches
+
+### User Experience
+
+1. Always provide preview when possible
+2. Use semantic keybindings (ctrl-e for edit)
+3. Provide helpful --header messages
+4. Use --multi for batch operations
+5. Toggle preview with ctrl-/ for large files
+
+### Integration
+
+```bash
+# Combine with xargs
+fd -e py | fzf -m | xargs wc -l
+
+# Combine with while read
+fd | fzf -m | while read file; do
+  echo "Processing: $file"
+  # Process file
+done
+
+# Combine with command substitution
+vim $(fzf)
+cd $(fd -t d | fzf)
+```
+
+### Scripting
+
+```bash
+# Exit code check
+if result=$(fd | fzf); then
+  echo "Selected: $result"
+else
+  echo "No selection or cancelled"
+  exit 1
+fi
+
+# Multi-select results
+selected=$(fd | fzf -m)
+if [[ -n "$selected" ]]; then
+  echo "$selected" | while read file; do
+    process "$file"
+  done
+fi
+```
diff --git a/references/jq-cookbook.md b/references/jq-cookbook.md
new file mode 100644
index 0000000..c0dbc6d
--- /dev/null
+++ b/references/jq-cookbook.md
@@ -0,0 +1,656 @@
+# jq - JSON Processing Cookbook
+
+## Overview
+
+`jq` is a lightweight command-line JSON processor. It's like `sed` for JSON data.
+
+## Basic Queries
+
+### Identity and Pretty Print
+
+```bash
+# Identity (pretty print)
+jq . file.json
+
+# Compact output
+jq -c . file.json
+
+# Raw output (no quotes for strings)
+jq -r . file.json
+
+# Sort keys
+jq -S . file.json
+```
+
+### Accessing Fields
+
+```bash
+# Top-level field
+jq '.name' file.json
+
+# Nested field
+jq '.user.email' file.json
+
+# Deeply nested
+jq '.data.user.profile.settings.theme' file.json
+
+# Optional fields (null if missing)
+jq '.user.address?' file.json
+```
+
+### Array Access
+
+```bash
+# First element
+jq '.[0]' file.json
+
+# Last element
+jq '.[-1]' file.json
+
+# Specific index
+jq '.[2]' file.json
+
+# Slice (first 3 elements)
+jq '.[:3]' file.json
+
+# Slice (elements 2-5)
+jq '.[2:5]' file.json
+
+# All elements
+jq '.[]' file.json
+```
+
+## Iterating
+
+### Array Iteration
+
+```bash
+# Extract field from each element
+jq '.users[].name' file.json
+
+# Multiple fields
+jq '.users[] | .name, .email' file.json
+
+# Nested iteration
+jq '.departments[].employees[].name' file.json
+```
+
+### Object Iteration
+
+```bash
+# All values
+jq '.[]' file.json
+
+# All keys
+jq 'keys' file.json
+
+# Key-value pairs
+jq 'to_entries' file.json
+
+# Iterate key-value
+jq 'to_entries[] | .key + ": " + (.value | tostring)' file.json
+```
+
+## Filtering
+
+### Select
+
+```bash
+# Filter by condition
+jq '.users[] | select(.active == true)' file.json
+
+# Multiple conditions (AND)
+jq '.users[] | select(.active == true and .age > 18)' file.json
+
+# Multiple conditions (OR)
+jq '.users[] | select(.active == true or .admin == true)' file.json
+
+# Not
+jq '.users[] | select(.active != false)' file.json
+
+# Check field exists
+jq '.users[] | select(.email != null)' file.json
+jq '.users[] | select(has("email"))' file.json
+```
+
+### Comparison Operators
+
+```bash
+# Equality
+jq '.items[] | select(.status == "active")' file.json
+
+# Greater/Less than
+jq '.items[] | select(.price > 100)' file.json
+jq '.items[] | select(.price <= 50)' file.json
+
+# String contains
+jq '.items[] | select(.name | contains("widget"))' file.json
+
+# String starts with
+jq '.items[] | select(.name | startswith("A"))' file.json
+
+# String ends with
+jq '.items[] | select(.name | endswith(".json"))' file.json
+
+# Regex match
+jq '.items[] | select(.email | test("@gmail\\.com$"))' file.json
+```
+
+## Transforming
+
+### Map
+
+```bash
+# Extract single field
+jq '.users | map(.name)' file.json
+
+# Extract multiple fields
+jq '.users | map({name, email})' file.json
+
+# Transform values
+jq '.prices | map(. * 1.1)' file.json
+
+# Conditional transformation
+jq '.users | map(if .active then .name else empty end)' file.json
+```
+
+### Reduce
+
+```bash
+# Sum
+jq '[.items[].price] | add' file.json
+
+# Average
+jq '[.items[].price] | add / length' file.json
+
+# Min/Max
+jq '[.items[].price] | min' file.json
+jq '[.items[].price] | max' file.json
+
+# Count
+jq '.items | length' file.json
+
+# Custom reduce
+jq 'reduce .items[] as $item (0; . + $item.price)' file.json
+```
+
+### Group By
+
+```bash
+# Group by field
+jq 'group_by(.category)' file.json
+
+# Group and count
+jq 'group_by(.category) | map({category: .[0].category, count: length})' file.json
+
+# Group and aggregate
+jq 'group_by(.category) | map({
+  category: .[0].category,
+  total: map(.price) | add
+})' file.json
+```
+
+## Sorting
+
+```bash
+# Sort array
+jq 'sort' file.json
+
+# Sort by field
+jq 'sort_by(.name)' file.json
+
+# Reverse sort
+jq 'sort_by(.name) | reverse' file.json
+
+# Sort by multiple fields
+jq 'sort_by(.category, .name)' file.json
+
+# Sort numbers
+jq 'sort_by(.price | tonumber)' file.json
+```
+
+## Constructing
+
+### Objects
+
+```bash
+# New object with specific fields
+jq '{name: .name, email: .email}' file.json
+
+# Rename fields
+jq '{username: .name, mail: .email}' file.json
+
+# Computed fields
+jq '{
+  name: .name,
+  fullName: .firstName + " " + .lastName,
+  discountPrice: .price * 0.9
+}' file.json
+
+# Nested objects
+jq '{
+  user: {
+    name: .name,
+    contact: {email: .email}
+  }
+}' file.json
+```
+
+### Arrays
+
+```bash
+# Create array from fields
+jq '[.name, .email, .age]' file.json
+
+# Array of objects
+jq '[.users[] | {name, email}]' file.json
+
+# Flatten nested arrays
+jq '.departments[].employees | flatten' file.json
+
+# Unique elements
+jq '.tags | unique' file.json
+
+# Array difference
+jq '.a - .b' file.json
+```
+
+## String Operations
+
+```bash
+# Concatenation
+jq '.firstName + " " + .lastName' file.json
+
+# Interpolation
+jq '"Hello, \(.name)!"' file.json
+
+# String length
+jq '.name | length' file.json
+
+# Uppercase/Lowercase
+jq '.name | ascii_upcase' file.json
+jq '.name | ascii_downcase' file.json
+
+# Split string
+jq '.path | split("/")' file.json
+
+# Join array
+jq '.tags | join(", ")' file.json
+
+# Trim whitespace
+jq '.text | gsub("^\\s+|\\s+$"; "")' file.json
+
+# Replace
+jq '.text | gsub("old"; "new")' file.json
+```
+
+## Type Conversions
+
+```bash
+# To string
+jq '.age | tostring' file.json
+
+# To number
+jq '.price | tonumber' file.json
+
+# To array
+jq '[.]' file.json
+
+# Type check
+jq '.value | type' file.json
+
+# Type test
+jq 'if .value | type == "string" then "is string" else "not string" end' file.json
+```
+
+## Conditionals
+
+```bash
+# If-then-else
+jq 'if .active then "active" else "inactive" end' file.json
+
+# Multiple conditions
+jq 'if .score >= 90 then "A"
+    elif .score >= 80 then "B"
+    elif .score >= 70 then "C"
+    else "F"
+    end' file.json
+
+# Ternary-like
+jq '.users[] | {name, status: (if .active then "active" else "inactive" end)}' file.json
+
+# Alternative operator
+jq '.value // "default"' file.json  # Use "default" if .value is null/false
+```
+
+## Combining Data
+
+### Merging
+
+```bash
+# Merge objects
+jq '. + {newField: "value"}' file.json
+
+# Merge arrays
+jq '.a + .b' file.json
+
+# Recursive merge
+jq '. * {user: {active: true}}' file.json
+
+# Merge multiple files
+jq -s '.[0] + .[1]' file1.json file2.json
+```
+
+### Joining
+
+```bash
+# Array join
+jq '.array1 + .array2' file.json
+
+# Unique elements from multiple arrays
+jq '(.array1 + .array2) | unique' file.json
+
+# Intersection
+jq '.array1 - (.array1 - .array2)' file.json
+```
+
+## Advanced Patterns
+
+### Working with Nested Data
+
+```bash
+# Recursive descent
+jq '.. | .name? // empty' file.json
+
+# Find all values for a key
+jq '.. | .email? // empty' file.json
+
+# Flatten deeply nested structure
+jq '[.. | .users? // empty] | flatten' file.json
+```
+
+### Multiple Outputs
+
+```bash
+# Multiple queries
+jq '.name, .email' file.json
+
+# Conditional multiple outputs
+jq '.users[] | .name, (if .admin then "ADMIN" else empty end)' file.json
+```
+
+### Error Handling
+
+```bash
+# Try-catch
+jq 'try .field catch "not found"' file.json
+
+# Optional field access
+jq '.user?.email?' file.json
+
+# Default values
+jq '.count // 0' file.json
+```
+
+### Custom Functions
+
+```bash
+# Define and use function
+jq 'def double: . * 2; .values[] | double' file.json
+
+# Function with parameters
+jq 'def multiply(n): . * n; .values[] | multiply(3)' file.json
+
+# Recursive function
+jq 'def factorial: if . <= 1 then 1 else . * ((. - 1) | factorial) end; 5 | factorial'
+```
+
+## Practical Examples
+
+### API Response Processing
+
+```bash
+# Extract IDs
+curl -s 'https://api.example.com/users' | jq '.data[].id'
+
+# Format for CSV
+curl -s 'https://api.example.com/users' | \
+  jq -r '.data[] | [.id, .name, .email] | @csv'
+
+# Extract nested data
+curl -s 'https://api.example.com/posts' | \
+  jq '.posts[] | {
+    id,
+    title,
+    author: .user.name,
+    comments: .comments | length
+  }'
+```
+
+### Configuration Management
+
+```bash
+# Update config value
+jq '.database.host = "localhost"' config.json
+
+# Add new field
+jq '. + {newFeature: true}' config.json
+
+# Remove field
+jq 'del(.deprecated)' config.json
+
+# Merge configs
+jq -s '.[0] * .[1]' base.json override.json > merged.json
+```
+
+### Data Analysis
+
+```bash
+# Count by category
+jq 'group_by(.category) | map({category: .[0].category, count: length})' data.json
+
+# Top 10 by price
+jq 'sort_by(.price) | reverse | .[:10]' data.json
+
+# Statistics
+jq '{
+  total: length,
+  avgPrice: (map(.price) | add / length),
+  maxPrice: (map(.price) | max),
+  minPrice: (map(.price) | min)
+}' data.json
+```
+
+### Testing and Validation
+
+```bash
+# Check required fields
+jq '.users[] | select(has("name") and has("email") | not)' data.json
+
+# Validate email format
+jq '.users[] | select(.email | test("^[^@]+@[^@]+$") | not)' data.json
+
+# Find duplicates
+jq 'group_by(.id) | map(select(length > 1))' data.json
+```
+
+### Log Processing
+
+```bash
+# Filter log level
+jq 'select(.level == "error")' logs.json
+
+# Extract error messages
+jq 'select(.level == "error") | .message' logs.json
+
+# Group errors by type
+jq -s 'group_by(.error_type) | map({type: .[0].error_type, count: length})' logs.json
+
+# Time range filter
+jq 'select(.timestamp >= "2024-01-01" and .timestamp < "2024-02-01")' logs.json
+```
+
+## Output Formats
+
+```bash
+# Raw output (no quotes)
+jq -r '.name' file.json
+
+# Compact output
+jq -c '.' file.json
+
+# Tab-separated
+jq -r '.[] | [.name, .age] | @tsv' file.json
+
+# CSV
+jq -r '.[] | [.name, .age, .email] | @csv' file.json
+
+# URL encoding
+jq -r '.params | @uri' file.json
+
+# Base64 encoding
+jq -r '.data | @base64' file.json
+
+# HTML encoding
+jq -r '.content | @html' file.json
+
+# JSON output (default)
+jq '.' file.json
+```
+
+## Command-Line Options
+
+```bash
+# Read from stdin
+echo '{"name":"test"}' | jq .
+
+# Multiple files
+jq . file1.json file2.json
+
+# Slurp (read all files into array)
+jq -s . file1.json file2.json
+
+# Null input (generate data)
+jq -n '{name: "test", date: now}'
+
+# Exit with status code
+jq -e 'select(.status == "ok")' file.json
+
+# Tab indentation
+jq --tab . file.json
+
+# No color
+jq -M . file.json
+
+# Color (force)
+jq -C . file.json
+```
+
+## Tips and Tricks
+
+### Debugging
+
+```bash
+# Pretty print
+jq . file.json | less
+
+# Inspect structure
+jq 'paths' file.json
+
+# Show all keys
+jq '[paths | select(length == 1)] | unique' file.json
+
+# Debug filter
+jq 'debug | .name' file.json
+```
+
+### Performance
+
+```bash
+# Stream processing (memory efficient)
+jq --stream . large.json
+
+# Compact input
+jq -c . file.json
+
+# Limit output
+jq 'limit(10; .items[])' file.json
+```
+
+### Combining with Other Tools
+
+```bash
+# With curl
+curl -s 'https://api.github.com/users/github' | jq '.name'
+
+# With fd/rg
+fd -e json | xargs jq '.version'
+
+# With fzf
+jq -r '.users[].name' users.json | fzf
+
+# With xargs
+jq -r '.files[]' manifest.json | xargs cat
+```
+
+## Common Patterns
+
+### Filter-Map-Reduce
+
+```bash
+# Classic pattern
+jq '.items[] |           # iterate
+    select(.active) |    # filter
+    .price |             # map
+    add'                 # reduce
+```
+
+### Pagination
+
+```bash
+# Page 1 (items 0-9)
+jq '.items[0:10]' data.json
+
+# Page 2 (items 10-19)
+jq '.items[10:20]' data.json
+
+# Function for pagination
+page() {
+  local page=$1
+  local size=${2:-10}
+  local start=$((page * size))
+  local end=$((start + size))
+  jq ".items[$start:$end]" data.json
+}
+```
+
+### Data Migration
+
+```bash
+# Old format to new format
+jq 'map({
+  id: .user_id,
+  profile: {
+    name: .username,
+    email: .user_email
+  }
+})' old_format.json > new_format.json
+```
+
+## Error Messages
+
+```bash
+# Common errors and fixes
+
+# "parse error: Invalid numeric literal"
+# → Check JSON syntax, trailing commas
+
+# "Cannot iterate over null"
+# → Add optional operator: .field[]?
+
+# "Cannot index string with string"
+# → Check data types, .field might be string not object
+
+# "jq: error: syntax error"
+# → Check quote escaping in shell
+```
diff --git a/references/rg-patterns.md b/references/rg-patterns.md
new file mode 100644
index 0000000..e34e3ed
--- /dev/null
+++ b/references/rg-patterns.md
@@ -0,0 +1,443 @@
+# rg - Ripgrep Patterns and Usage
+
+## Overview
+
+`ripgrep` (rg) is an extremely fast text search tool that respects `.gitignore` and supports regex patterns.
+
+## Basic Search
+
+```bash
+# Simple search
+rg 'pattern'
+
+# Case-insensitive
+rg -i 'pattern'
+
+# Case-sensitive (force)
+rg -s 'Pattern'
+
+# Smart case (case-insensitive unless uppercase present)
+rg -S 'pattern'
+```
+
+## File Type Filtering
+
+```bash
+# Search in specific file types
+rg -t py 'import'           # Python files
+rg -t rust 'fn main'        # Rust files
+rg -t js 'function'         # JavaScript files
+
+# Multiple types
+rg -t py -t js 'class'
+
+# Exclude types
+rg -T py 'pattern'          # Everything except Python
+
+# List available types
+rg --type-list
+```
+
+## Context Control
+
+```bash
+# Lines before match
+rg -B 2 'pattern'
+
+# Lines after match
+rg -A 5 'pattern'
+
+# Lines before and after
+rg -C 3 'pattern'
+
+# Both (different values)
+rg -B 2 -A 5 'pattern'
+```
+
+## Output Formatting
+
+```bash
+# Show line numbers (default in terminal)
+rg -n 'pattern'
+
+# Hide line numbers
+rg -N 'pattern'
+
+# Show column numbers
+rg --column 'pattern'
+
+# Show file paths only
+rg -l 'pattern'
+
+# Show files without matches
+rg --files-without-match 'pattern'
+
+# Count matches per file
+rg -c 'pattern'
+
+# Count total matches
+rg --count-matches 'pattern'
+```
+
+## Advanced Search
+
+### Word Boundaries
+
+```bash
+# Match whole words only
+rg -w 'word'
+
+# Example: find 'test' but not 'testing'
+rg -w 'test'
+
+# Regex word boundaries
+rg '\bword\b'
+```
+
+### Multiline Search
+
+```bash
+# Enable multiline mode
+rg -U 'pattern.*spanning.*lines'
+
+# Example: find function definitions
+rg -U 'def \w+\([^)]*\):\s*"""[^"]*"""'
+
+# Multiline with context
+rg -U -C 2 'pattern.*multiline'
+```
+
+### Fixed Strings
+
+```bash
+# Literal string search (no regex, faster)
+rg -F 'literal.string[with]special.chars'
+
+# Case-insensitive literal
+rg -F -i 'Literal String'
+```
+
+## File Filtering
+
+### By Path
+
+```bash
+# Search in specific directory
+rg 'pattern' src/
+
+# Multiple directories
+rg 'pattern' src/ tests/
+
+# Glob patterns
+rg -g '*.py' 'pattern'
+rg -g '**/*test*.py' 'pattern'
+
+# Multiple globs
+rg -g '*.{js,ts}' 'pattern'
+
+# Negative globs (exclude)
+rg -g '!*test*' 'pattern'
+rg -g '!*.min.js' 'pattern'
+```
+
+### Hidden and Ignored Files
+
+```bash
+# Search hidden files
+rg --hidden 'pattern'
+
+# Ignore .gitignore rules
+rg --no-ignore 'pattern'
+
+# Both
+rg --hidden --no-ignore 'pattern'
+
+# Search specific ignored directories
+rg --no-ignore -g 'node_modules/**' 'pattern'
+```
+
+## Regex Patterns
+
+### Basic Regex
+
+```bash
+# Any character
+rg 'a.c'              # matches 'abc', 'a2c', etc.
+
+# Character classes
+rg '[0-9]+'           # one or more digits
+rg '[a-zA-Z]+'        # letters only
+rg '[^0-9]'           # anything except digits
+
+# Anchors
+rg '^pattern'         # start of line
+rg 'pattern$'         # end of line
+rg '^pattern$'        # entire line matches
+```
+
+### Quantifiers
+
+```bash
+# Zero or more
+rg 'ab*c'             # ac, abc, abbc, etc.
+
+# One or more
+rg 'ab+c'             # abc, abbc, etc.
+
+# Zero or one
+rg 'ab?c'             # ac, abc
+
+# Exact count
+rg 'a{3}'             # aaa
+rg 'a{2,4}'           # aa, aaa, aaaa
+rg 'a{2,}'            # aa, aaa, aaaa, etc.
+```
+
+### Groups and Alternation
+
+```bash
+# Groups
+rg '(ab)+'            # ab, abab, ababab, etc.
+
+# Alternation
+rg 'cat|dog'          # cat or dog
+rg '(import|from) numpy'
+
+# Non-capturing groups
+rg '(?:http|https)://[^\s]+'
+```
+
+### Lookahead/Lookbehind
+
+```bash
+# Positive lookahead
+rg 'test(?=_unit)'    # 'test' followed by '_unit'
+
+# Negative lookahead
+rg 'test(?!_integration)'  # 'test' not followed by '_integration'
+
+# Positive lookbehind
+rg '(?<=def )\\w+'    # word after 'def '
+
+# Negative lookbehind
+rg '(?<!@)property'   # 'property' not preceded by '@'
+```
+
+## Replacement (with sed/perl)
+
+```bash
+# Find and replace (dry run)
+rg -l 'old_pattern' | xargs sed -n 's/old_pattern/new_pattern/gp'
+
+# Find and replace (in-place)
+rg -l 'old_pattern' | xargs sed -i '' 's/old_pattern/new_pattern/g'
+
+# Using perl for complex replacements
+rg -l 'pattern' | xargs perl -pi -e 's/old/new/g'
+```
+
+## JSON Output
+
+```bash
+# JSON output for scripting
+rg --json 'pattern'
+
+# Parse with jq
+rg --json 'pattern' | jq -r 'select(.type == "match") | .data.path.text'
+
+# Get line numbers
+rg --json 'pattern' | jq -r 'select(.type == "match") | "\(.data.path.text):\(.data.line_number)"'
+```
+
+## Statistics and Analysis
+
+```bash
+# Show statistics
+rg --stats 'pattern'
+
+# Count matches per file
+rg -c 'pattern' | sort -t: -k2 -nr
+
+# Find most common matches
+rg -o 'pattern' | sort | uniq -c | sort -nr
+
+# Files with most matches
+rg -c 'TODO' | awk -F: '$2 > 0' | sort -t: -k2 -nr | head
+```
+
+## Common Workflows
+
+### Code Search
+
+```bash
+# Find function definitions (Python)
+rg 'def \w+\(' -t py
+
+# Find class definitions
+rg 'class \w+' -t py
+
+# Find imports
+rg 'from .* import' -t py
+
+# Find TODO/FIXME comments
+rg '(TODO|FIXME|XXX|HACK):'
+
+# Find console.log statements
+rg 'console\.(log|error|warn)' -t js
+```
+
+### Configuration Search
+
+```bash
+# Find API keys (be careful!)
+rg -i 'api[_-]?key' -g '!*.md'
+
+# Find environment variables
+rg 'process\.env\.' -t js
+rg 'os\.getenv' -t py
+
+# Find hardcoded IPs
+rg '\b\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\b'
+
+# Find URLs
+rg 'https?://[^\s<>"{}|\\^`\[\]]+'
+```
+
+### Dependency Analysis
+
+```bash
+# Find all imports of a module
+rg 'from mymodule import' -t py
+
+# Find all requires
+rg "require\(['\"].*['\"]\\)" -t js
+
+# Find external dependencies
+rg 'import.*from ["\'](?!\.)[^"\']+' -t py
+```
+
+### Testing
+
+```bash
+# Find test functions
+rg 'def test_\w+' -t py
+rg 'it\(["\']' -t js
+
+# Find assertions
+rg 'assert\w*\(' -t py
+rg 'expect\(' -t js
+
+# Find skipped tests
+rg '@skip|@pytest\.mark\.skip' -t py
+rg '\.skip\(' -t js
+```
+
+## Performance Tips
+
+1. **Use file type filters**: `-t` is faster than glob patterns
+2. **Use fixed strings when possible**: `-F` bypasses regex engine
+3. **Limit search scope**: Specify directories explicitly
+4. **Use word boundaries**: `-w` is faster than `\b` regex
+5. **Respect .gitignore**: Default behavior is already optimized
+
+## Interactive Workflows
+
+```bash
+# Search and edit
+rg -l 'TODO' | fzf | xargs $EDITOR
+
+# Search with preview
+rg --line-number 'pattern' | fzf --delimiter : --preview 'bat --color=always {1} --highlight-line {2}'
+
+# Multi-select and edit
+rg -l 'pattern' | fzf -m | xargs $EDITOR
+
+# Search, select, and replace
+FILE=$(rg -l 'pattern' | fzf)
+rg 'pattern' "$FILE" | fzf
+```
+
+## Configuration
+
+Create `~/.ripgreprc` for default options:
+
+```bash
+# Always show line numbers
+--line-number
+
+# Smart case search
+--smart-case
+
+# Follow symlinks
+--follow
+
+# Custom type definitions
+--type-add=web:*.{html,css,js}*
+```
+
+Use with: `export RIPGREP_CONFIG_PATH=~/.ripgreprc`
+
+## Comparison with grep
+
+| Task | grep | rg |
+|------|------|-----|
+| Case-insensitive | `grep -i` | `rg -i` |
+| Recursive | `grep -r` | `rg` (default) |
+| Show line numbers | `grep -n` | `rg -n` (default) |
+| Context | `grep -C 3` | `rg -C 3` |
+| File type | `grep --include='*.py'` | `rg -t py` |
+| Exclude pattern | `grep --exclude='test*'` | `rg -g '!test*'` |
+
+## Tips and Tricks
+
+### Shell Aliases
+
+```bash
+alias rgi='rg -i'                    # Case-insensitive
+alias rga='rg --hidden --no-ignore'  # Search everything
+alias rgl='rg -l'                    # Files only
+alias rgc='rg -c'                    # Count per file
+```
+
+### Functions
+
+```bash
+# Search and edit function
+rge() {
+  rg -l "$1" | fzf --preview "rg --color=always -C 5 '$1' {}" | xargs $EDITOR
+}
+
+# Search in specific file type
+rgt() {
+  TYPE=$1
+  shift
+  rg -t "$TYPE" "$@"
+}
+
+# Search with context and open
+rgf() {
+  rg --line-number "$1" | fzf --delimiter : --preview 'bat --color=always {1} --highlight-line {2}' | awk -F: '{print $1}' | xargs $EDITOR
+}
+```
+
+### Complex Patterns
+
+```bash
+# Email addresses
+rg '\b[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Z|a-z]{2,}\b'
+
+# Phone numbers (US)
+rg '\b\d{3}[-.]?\d{3}[-.]?\d{4}\b'
+
+# Hex colors
+rg '#[0-9a-fA-F]{6}\b'
+
+# Semantic versions
+rg '\b\d+\.\d+\.\d+\b'
+
+# Python function with type hints
+rg 'def \w+\([^)]*\) -> \w+:'
+
+# SQL queries in code
+rg -U 'SELECT.*FROM.*WHERE'
+```
diff --git a/references/yq-examples.md b/references/yq-examples.md
new file mode 100644
index 0000000..6940795
--- /dev/null
+++ b/references/yq-examples.md
@@ -0,0 +1,677 @@
+# yq - YAML/XML Processing Examples
+
+## Overview
+
+`yq` is a lightweight command-line YAML/XML processor. It's like `jq` but for YAML and XML.
+
+## YAML Processing
+
+### Basic Queries
+
+```bash
+# Pretty print
+yq . file.yaml
+
+# Access field
+yq '.name' file.yaml
+
+# Nested access
+yq '.database.host' file.yaml
+
+# Array access
+yq '.items[0]' file.yaml
+
+# All array elements
+yq '.items[]' file.yaml
+```
+
+### Filtering
+
+```bash
+# Filter by condition
+yq '.users[] | select(.active == true)' file.yaml
+
+# Multiple conditions
+yq '.users[] | select(.age > 18 and .active == true)' file.yaml
+
+# String contains
+yq '.items[] | select(.name | contains("widget"))' file.yaml
+```
+
+### Transforming
+
+```bash
+# Extract specific fields
+yq '.users[] | {name, email}' file.yaml
+
+# Map array
+yq '.items | map(.price * 1.1)' file.yaml
+
+# Sort
+yq 'sort_by(.name)' file.yaml
+
+# Group by
+yq 'group_by(.category)' file.yaml
+```
+
+### Updating Values
+
+```bash
+# Update single field
+yq '.database.host = "localhost"' file.yaml
+
+# Update nested field
+yq '.server.config.port = 8080' file.yaml
+
+# Update array element
+yq '.items[0].price = 99.99' file.yaml
+
+# Add new field
+yq '. + {"newField": "value"}' file.yaml
+
+# Delete field
+yq 'del(.deprecated)' file.yaml
+```
+
+### In-Place Editing
+
+```bash
+# Edit file in-place
+yq -i '.version = "2.0"' file.yaml
+
+# Multiple updates
+yq -i '
+  .version = "2.0" |
+  .updated = now |
+  .deprecated = null
+' file.yaml
+```
+
+### Merging Files
+
+```bash
+# Merge two YAML files
+yq '. *= load("other.yaml")' base.yaml
+
+# Merge with override
+yq 'load("base.yaml") * load("override.yaml")'
+
+# Merge multiple files
+yq eval-all '. as $item ireduce ({}; . * $item)' file1.yaml file2.yaml file3.yaml
+```
+
+## Format Conversion
+
+### YAML to JSON
+
+```bash
+# Convert YAML to JSON
+yq -o json . file.yaml
+
+# Compact JSON
+yq -o json -I 0 . file.yaml
+
+# Pretty JSON
+yq -o json . file.yaml | jq .
+```
+
+### JSON to YAML
+
+```bash
+# Convert JSON to YAML
+yq -P . file.json
+
+# From stdin
+echo '{"name":"test"}' | yq -P .
+
+# Pipeline
+cat file.json | yq -P . > file.yaml
+```
+
+### YAML to TOML
+
+```bash
+# Convert YAML to TOML
+yq -o toml . file.yaml
+```
+
+### YAML to XML
+
+```bash
+# Convert YAML to XML
+yq -o xml . file.yaml
+```
+
+## XML Processing
+
+### Reading XML
+
+```bash
+# Parse XML
+yq -p xml . file.xml
+
+# Access element
+yq -p xml '.root.element' file.xml
+
+# Access attribute
+yq -p xml '.root.+@attr' file.xml
+
+# All elements
+yq -p xml '.root.items[]' file.xml
+```
+
+### Filtering XML
+
+```bash
+# Filter by attribute
+yq -p xml '.root.item[] | select(.+@id == "123")' file.xml
+
+# Filter by element value
+yq -p xml '.root.item[] | select(.name == "test")' file.xml
+```
+
+### XML to JSON
+
+```bash
+# Convert XML to JSON
+yq -p xml -o json . file.xml
+
+# Extract and convert
+yq -p xml -o json '.root.items' file.xml
+```
+
+### XML to YAML
+
+```bash
+# Convert XML to YAML
+yq -p xml . file.xml
+
+# Pretty print
+yq -p xml -P . file.xml
+```
+
+## Common Use Cases
+
+### Docker Compose
+
+```bash
+# Get service names
+yq '.services | keys' docker-compose.yml
+
+# Get image for service
+yq '.services.web.image' docker-compose.yml
+
+# Update service port
+yq -i '.services.web.ports[0] = "8080:80"' docker-compose.yml
+
+# Add environment variable
+yq -i '.services.web.environment.DEBUG = "true"' docker-compose.yml
+
+# Get all exposed ports
+yq '.services[].ports[]' docker-compose.yml
+```
+
+### Kubernetes
+
+```bash
+# Get pod name
+yq '.metadata.name' pod.yaml
+
+# Get container image
+yq '.spec.containers[0].image' pod.yaml
+
+# Update replicas
+yq -i '.spec.replicas = 3' deployment.yaml
+
+# Get all container names
+yq '.spec.template.spec.containers[].name' deployment.yaml
+
+# Get resource limits
+yq '.spec.template.spec.containers[0].resources.limits' deployment.yaml
+```
+
+### CI/CD (GitHub Actions, GitLab CI)
+
+```bash
+# Get job names
+yq '.jobs | keys' .github/workflows/ci.yml
+
+# Get steps for job
+yq '.jobs.build.steps[].name' .github/workflows/ci.yml
+
+# Update trigger
+yq -i '.on.push.branches = ["main", "develop"]' .github/workflows/ci.yml
+
+# Get all used actions
+yq '.jobs[].steps[].uses' .github/workflows/ci.yml
+```
+
+### Configuration Files
+
+```bash
+# Application config
+yq '.app.port' config.yaml
+yq '.database.connection.host' config.yaml
+
+# Update config
+yq -i '.app.debug = true' config.yaml
+yq -i '.cache.enabled = false' config.yaml
+
+# Merge configs
+yq '. *= load("config.local.yaml")' config.yaml
+```
+
+### Ansible
+
+```bash
+# Get hosts
+yq '.all.hosts | keys' inventory.yaml
+
+# Get variables
+yq '.all.vars' inventory.yaml
+
+# Update host variable
+yq -i '.all.hosts.server1.ansible_host = "192.168.1.10"' inventory.yaml
+
+# Get all playbook tasks
+yq '.[] | select(.tasks) | .tasks[].name' playbook.yaml
+```
+
+## Advanced Patterns
+
+### Conditional Updates
+
+```bash
+# Update if exists
+yq '(select(.field) | .field) = "new-value"' file.yaml
+
+# Update based on condition
+yq '(.items[] | select(.price > 100) | .discount) = 0.2' file.yaml
+
+# Add field if missing
+yq '. + (if has("field") then {} else {"field": "default"} end)' file.yaml
+```
+
+### Complex Transformations
+
+```bash
+# Restructure data
+yq '.users | map({
+  username: .name,
+  contact: {
+    email: .email,
+    phone: .phone
+  }
+})' file.yaml
+
+# Aggregate data
+yq '.items | group_by(.category) | map({
+  category: .[0].category,
+  total: map(.price) | add
+})' file.yaml
+
+# Pivot data
+yq 'reduce .items[] as $item ({}; .[$item.name] = $item.value)' file.yaml
+```
+
+### Working with Arrays
+
+```bash
+# Append to array
+yq '.items += ["new-item"]' file.yaml
+
+# Prepend to array
+yq '.items = ["new-item"] + .items' file.yaml
+
+# Remove from array
+yq 'del(.items[2])' file.yaml
+
+# Filter array
+yq '.items = [.items[] | select(.active == true)]' file.yaml
+
+# Unique array
+yq '.items | unique' file.yaml
+
+# Flatten array
+yq '.items | flatten' file.yaml
+```
+
+### Multi-Document YAML
+
+```bash
+# Process all documents
+yq '.' multi-doc.yaml
+
+# Select specific document
+yq 'select(document_index == 0)' multi-doc.yaml
+
+# Filter documents
+yq 'select(.kind == "Deployment")' multi-doc.yaml
+
+# Update all documents
+yq -i '.metadata.labels.app = "myapp"' multi-doc.yaml
+```
+
+## String Operations
+
+```bash
+# Concatenation
+yq '.fullName = .firstName + " " + .lastName' file.yaml
+
+# Interpolation
+yq '.message = "Hello, " + .name + "!"' file.yaml
+
+# Uppercase
+yq '.name | upcase' file.yaml
+
+# Lowercase
+yq '.name | downcase' file.yaml
+
+# Split
+yq '.path | split("/")' file.yaml
+
+# Join
+yq '.items | join(", ")' file.yaml
+
+# Replace
+yq '.text | sub("old", "new")' file.yaml
+
+# Trim
+yq '.text | trim' file.yaml
+```
+
+## Type Checking and Conversion
+
+```bash
+# Check type
+yq '.field | type' file.yaml
+
+# Convert to string
+yq '.number | tostring' file.yaml
+
+# Convert to number
+yq '.string | tonumber' file.yaml
+
+# Check if exists
+yq 'has("field")' file.yaml
+
+# Length
+yq '.items | length' file.yaml
+```
+
+## Comments
+
+```bash
+# Preserve comments (default behavior)
+yq '.field = "new-value"' file.yaml
+
+# Add headComment
+yq '.field headComment="This is a comment"' file.yaml
+
+# Add lineComment
+yq '.field lineComment="inline comment"' file.yaml
+
+# Add footComment
+yq '.field footComment="bottom comment"' file.yaml
+```
+
+## Anchors and Aliases
+
+```bash
+# Create anchor
+yq '.base.&anchor = {"key": "value"}' file.yaml
+
+# Reference anchor
+yq '.other = .base.*anchor' file.yaml
+
+# Merge anchors
+yq '.combined = .base.*anchor * .override' file.yaml
+```
+
+## Validation
+
+```bash
+# Check if valid YAML
+yq . file.yaml > /dev/null && echo "Valid" || echo "Invalid"
+
+# Validate schema (requires schema file)
+yq 'load("schema.yaml") | . as $schema | load("data.yaml") | validate($schema)'
+
+# Check required fields
+yq 'select(has("requiredField") | not)' file.yaml
+
+# Validate format
+yq 'select(.email | test("^[^@]+@[^@]+$") | not)' file.yaml
+```
+
+## Output Formatting
+
+```bash
+# Default YAML output
+yq . file.yaml
+
+# Compact (minimal whitespace)
+yq -I 0 . file.yaml
+
+# Custom indentation (4 spaces)
+yq -I 4 . file.yaml
+
+# No colors
+yq -C 0 . file.yaml
+
+# Force colors
+yq -C 1 . file.yaml
+
+# Raw output (no quotes)
+yq -r '.name' file.yaml
+
+# One line per document
+yq -o json . multi-doc.yaml
+```
+
+## Scripting Examples
+
+### Environment-Specific Configs
+
+```bash
+#!/bin/bash
+ENV=${1:-dev}
+
+yq ". *= load(\"config.$ENV.yaml\")" config.base.yaml > config.yaml
+```
+
+### Bulk Updates
+
+```bash
+#!/bin/bash
+for file in *.yaml; do
+  yq -i '.metadata.labels.version = "2.0"' "$file"
+done
+```
+
+### Config Validation
+
+```bash
+#!/bin/bash
+REQUIRED_FIELDS=("name" "version" "description")
+
+for field in "${REQUIRED_FIELDS[@]}"; do
+  if ! yq -e "has(\"$field\")" config.yaml > /dev/null; then
+    echo "Missing required field: $field"
+    exit 1
+  fi
+done
+```
+
+### Secret Management
+
+```bash
+#!/bin/bash
+# Extract secrets from YAML
+yq '.secrets' config.yaml > secrets.yaml
+
+# Encrypt secrets (example with age)
+yq '.secrets' config.yaml | age -e -o secrets.age
+
+# Decrypt and merge
+age -d secrets.age | yq -P . > secrets.yaml
+yq '. *= load("secrets.yaml")' config.yaml
+```
+
+## Integration Examples
+
+### With Git
+
+```bash
+# Pre-commit hook to sort keys
+git diff --cached --name-only | \
+  grep '\.yaml$' | \
+  xargs -I {} yq -i -P 'sort_keys(..)' {}
+```
+
+### With Docker
+
+```bash
+# Extract image tags
+yq '.services[].image' docker-compose.yml | \
+  cut -d: -f2 | \
+  sort -u
+
+# Update all images to latest
+yq -i '(.services[].image) |= sub(":.*", ":latest")' docker-compose.yml
+```
+
+### With Kubernetes
+
+```bash
+# Apply with modifications
+yq '.spec.replicas = 3' deployment.yaml | kubectl apply -f -
+
+# Extract all images
+kubectl get pods -o yaml | \
+  yq '.items[].spec.containers[].image' | \
+  sort -u
+
+# Generate manifests
+yq eval-all '. as $item ireduce ({}; . * $item)' \
+  base/*.yaml overlays/prod/*.yaml | \
+  kubectl apply -f -
+```
+
+### With CI/CD
+
+```bash
+# Update version in workflow
+VERSION=$(git describe --tags)
+yq -i ".env.VERSION = \"$VERSION\"" .github/workflows/deploy.yml
+
+# Extract job matrix
+MATRIX=$(yq -o json '.jobs.test.strategy.matrix' .github/workflows/ci.yml)
+echo "matrix=$MATRIX" >> $GITHUB_OUTPUT
+```
+
+## Performance Tips
+
+1. **Use in-place editing**: `-i` avoids reading/writing twice
+2. **Pipe instead of temp files**: More efficient for transformations
+3. **Specific paths**: Access `.field.subfield` instead of iterating
+4. **Limit output**: Use `select` early to filter data
+5. **Batch operations**: Combine multiple updates in one command
+
+## Common Patterns
+
+### Configuration Merging
+
+```bash
+# Base + environment + local
+yq eval-all '. as $item ireduce ({}; . * $item)' \
+  config.base.yaml \
+  config.$ENV.yaml \
+  config.local.yaml
+```
+
+### Secret Injection
+
+```bash
+# Replace placeholders with actual values
+yq '(.. | select(tag == "!!str")) |= envsubst' config.yaml
+```
+
+### Manifest Generation
+
+```bash
+# Generate K8s manifests from template
+yq '(.metadata.name) = "app-" + env(ENV) |
+    (.spec.replicas) = env(REPLICAS) |
+    (.spec.template.spec.containers[0].image) = env(IMAGE)' \
+  template.yaml
+```
+
+## Tips and Tricks
+
+### Debugging
+
+```bash
+# Pretty print to see structure
+yq -P . file.yaml
+
+# Show paths
+yq '.. | path | join(".")' file.yaml
+
+# Find all keys
+yq '.. | select(tag == "!!map") | keys' file.yaml
+```
+
+### Working with Large Files
+
+```bash
+# Stream processing
+yq -N . large.yaml  # Process without loading entirely
+
+# Extract specific document
+yq 'select(document_index == 5)' large-multi-doc.yaml
+
+# Count documents
+yq -N '.' multi-doc.yaml | grep -c '^---$'
+```
+
+### Shell Aliases
+
+```bash
+alias yqp='yq -P'           # Pretty print
+alias yqj='yq -o json'      # To JSON
+alias yqs='yq -I 2'         # 2-space indent
+alias yqc='yq -C 1'         # Force colors
+```
+
+## Error Handling
+
+```bash
+# Check if file exists and is valid
+if yq . file.yaml &>/dev/null; then
+  echo "Valid YAML"
+else
+  echo "Invalid YAML or file not found"
+  exit 1
+fi
+
+# Try with fallback
+VALUE=$(yq '.field // "default"' file.yaml)
+
+# Conditional processing
+if yq -e '.enabled == true' config.yaml > /dev/null; then
+  # Process when enabled
+  yq '.items[]' config.yaml
+fi
+```
+
+## Comparison with Other Tools
+
+| Task | yq | jq (JSON) | sed/awk |
+|------|----|-----------| --------|
+| Parse YAML | Native | Need conversion | Complex |
+| Parse JSON | Can do | Native | Possible |
+| Update in-place | `-i` flag | Needs sponge | `-i` flag |
+| Preserve comments | Yes | N/A | Yes |
+| Type safety | Yes | Yes | No |
+| Learning curve | Medium | Medium | Low/High |
diff --git a/scripts/combo-search.sh b/scripts/combo-search.sh
new file mode 100755
index 0000000..6237c21
--- /dev/null
+++ b/scripts/combo-search.sh
@@ -0,0 +1,278 @@
+#!/usr/bin/env bash
+#
+# combo-search.sh - Example combination workflows using CLI tools
+#
+# This script demonstrates common patterns for combining fd, rg, ast-grep,
+# fzf, jq, and yq to solve real-world repository navigation tasks.
+
+set -euo pipefail
+
+# Colors for output
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+BLUE='\033[0;34m'
+NC='\033[0m' # No Color
+
+# Helper function to print section headers
+print_section() {
+  echo -e "\n${BLUE}=== $1 ===${NC}\n"
+}
+
+# Helper function to print commands before execution
+print_command() {
+  echo -e "${YELLOW}$ $1${NC}"
+}
+
+# 1. Find Python files with TODO comments, select one, and edit
+find_and_edit_todos() {
+  print_section "Find and Edit TODOs"
+  print_command "rg -l 'TODO' -t py | fzf --preview 'rg -C 3 --color=always TODO {}' | xargs \$EDITOR"
+
+  local file
+  file=$(rg -l 'TODO' -t py | fzf --preview 'rg -C 3 --color=always TODO {}' || true)
+
+  if [[ -n "$file" ]]; then
+    echo -e "${GREEN}Selected: $file${NC}"
+    # Uncomment to actually open editor:
+    # $EDITOR "$file"
+  else
+    echo -e "${RED}No file selected${NC}"
+  fi
+}
+
+# 2. Find function definitions, select one, and show its usages
+find_function_usages() {
+  print_section "Find Function and Its Usages"
+
+  local func_pattern="def $1(\$\$\$):"
+
+  print_command "ast-grep --pattern '$func_pattern' -l py | fzf"
+
+  local result
+  result=$(ast-grep --pattern "$func_pattern" -l py | fzf --preview 'bat --color=always {1}' || true)
+
+  if [[ -n "$result" ]]; then
+    local func_name
+    func_name=$(echo "$result" | sed -n 's/.*def \([^(]*\)(.*/\1/p')
+
+    echo -e "${GREEN}Function: $func_name${NC}"
+    echo -e "${YELLOW}Usages:${NC}"
+
+    print_command "rg '\\b$func_name\\(' -t py"
+    rg "\b$func_name\(" -t py || echo "No usages found"
+  fi
+}
+
+# 3. Find configuration files and edit selected one
+edit_config_file() {
+  print_section "Find and Edit Configuration File"
+
+  print_command "fd -e json -e yaml -e toml config | fzf --preview 'bat --color=always {}'"
+
+  local config
+  config=$(fd -e json -e yaml -e toml config | fzf --preview 'bat --color=always {}' || true)
+
+  if [[ -n "$config" ]]; then
+    echo -e "${GREEN}Selected: $config${NC}"
+    # Uncomment to actually open editor:
+    # $EDITOR "$config"
+  else
+    echo -e "${RED}No config selected${NC}"
+  fi
+}
+
+# 4. Search for imports of a module and show file list
+find_module_imports() {
+  print_section "Find Module Imports"
+
+  local module="$1"
+
+  print_command "ast-grep --pattern 'from $module import \$\$\$' -l py"
+  print_command "ast-grep --pattern 'import $module' -l py"
+
+  echo -e "${YELLOW}Files importing $module:${NC}"
+  {
+    ast-grep --pattern "from $module import \$\$\$" -l py 2>/dev/null || true
+    ast-grep --pattern "import $module" -l py 2>/dev/null || true
+  } | sort -u
+}
+
+# 5. Find recently modified files and select for editing
+edit_recent_file() {
+  print_section "Find and Edit Recently Modified File"
+
+  print_command "fd -t f --changed-within 7d | fzf --preview 'bat --color=always {}'"
+
+  local file
+  file=$(fd -t f --changed-within 7d | fzf --preview 'bat --color=always {}' || true)
+
+  if [[ -n "$file" ]]; then
+    echo -e "${GREEN}Selected: $file${NC}"
+    # Uncomment to actually open editor:
+    # $EDITOR "$file"
+  else
+    echo -e "${RED}No file selected${NC}"
+  fi
+}
+
+# 6. Find JSON files and explore with jq
+explore_json_files() {
+  print_section "Find and Explore JSON Files"
+
+  print_command "fd -e json | fzf --preview 'jq --color-output . {}'"
+
+  local json_file
+  json_file=$(fd -e json | fzf --preview 'jq --color-output . {}' || true)
+
+  if [[ -n "$json_file" ]]; then
+    echo -e "${GREEN}Selected: $json_file${NC}"
+    echo -e "${YELLOW}Keys:${NC}"
+    jq 'keys' "$json_file"
+  else
+    echo -e "${RED}No JSON file selected${NC}"
+  fi
+}
+
+# 7. Find test files with failures
+find_failing_tests() {
+  print_section "Find Test Files with 'FAIL' or 'ERROR'"
+
+  print_command "rg -l '(FAIL|ERROR)' tests/ -t py | fzf --preview 'rg -C 5 --color=always \"(FAIL|ERROR)\" {}'"
+
+  local test_file
+  test_file=$(rg -l '(FAIL|ERROR)' tests/ -t py 2>/dev/null | \
+    fzf --preview 'rg -C 5 --color=always "(FAIL|ERROR)" {}' || true)
+
+  if [[ -n "$test_file" ]]; then
+    echo -e "${GREEN}Selected: $test_file${NC}"
+  else
+    echo -e "${RED}No failing tests found or none selected${NC}"
+  fi
+}
+
+# 8. Find and count function definitions by file
+count_functions_per_file() {
+  print_section "Count Function Definitions Per File"
+
+  print_command "ast-grep --pattern 'def \$FUNC(\$\$\$):' -l py | xargs -I {} sh -c 'echo \"{}: \$(ast-grep --pattern \"def \\\$FUNC(\\\$\\\$\\\$):\" {} | wc -l)\"'"
+
+  ast-grep --pattern 'def $FUNC($$$):' -l py 2>/dev/null | \
+    xargs -I {} sh -c 'echo "{}: $(ast-grep --pattern "def \$FUNC(\$\$\$):" {} | wc -l)"' | \
+    sort -t: -k2 -nr | \
+    head -10
+}
+
+# 9. Find all TODO/FIXME comments and group by file
+list_todos_by_file() {
+  print_section "List TODOs/FIXMEs Grouped by File"
+
+  print_command "rg -n '(TODO|FIXME|XXX|HACK):' | sort | fzf --preview 'bat --color=always {1} --highlight-line {2}'"
+
+  rg -n '(TODO|FIXME|XXX|HACK):' 2>/dev/null | \
+    sort | \
+    fzf --preview 'bat --color=always {1} --highlight-line {2}' || true
+}
+
+# 10. Interactive refactoring: find pattern and preview replacement
+interactive_refactor() {
+  print_section "Interactive Refactoring Preview"
+
+  local old_pattern="$1"
+  local new_pattern="$2"
+
+  print_command "ast-grep --pattern '$old_pattern' -l py | fzf -m --preview 'ast-grep --pattern \"$old_pattern\" {}'"
+
+  local files
+  files=$(ast-grep --pattern "$old_pattern" -l py 2>/dev/null | \
+    fzf -m --preview "ast-grep --pattern '$old_pattern' {}" || true)
+
+  if [[ -n "$files" ]]; then
+    echo -e "${GREEN}Selected files for refactoring:${NC}"
+    echo "$files"
+    echo -e "\n${YELLOW}To apply refactoring, run:${NC}"
+    echo -e "ast-grep --pattern '$old_pattern' --rewrite '$new_pattern' -l py --interactive"
+  else
+    echo -e "${RED}No files selected${NC}"
+  fi
+}
+
+# Main menu
+show_menu() {
+  echo -e "\n${BLUE}CLI Ninja - Combination Workflows${NC}\n"
+  echo "1. Find and edit TODOs"
+  echo "2. Find function usages (requires function name)"
+  echo "3. Edit config file"
+  echo "4. Find module imports (requires module name)"
+  echo "5. Edit recently modified file"
+  echo "6. Explore JSON files"
+  echo "7. Find failing tests"
+  echo "8. Count functions per file"
+  echo "9. List TODOs/FIXMEs"
+  echo "10. Interactive refactoring preview (requires old/new patterns)"
+  echo "0. Exit"
+  echo
+}
+
+# Main execution
+main() {
+  if [[ $# -eq 0 ]]; then
+    show_menu
+    read -rp "Select workflow: " choice
+
+    case $choice in
+      1) find_and_edit_todos ;;
+      2)
+        read -rp "Enter function name: " func
+        find_function_usages "$func"
+        ;;
+      3) edit_config_file ;;
+      4)
+        read -rp "Enter module name: " module
+        find_module_imports "$module"
+        ;;
+      5) edit_recent_file ;;
+      6) explore_json_files ;;
+      7) find_failing_tests ;;
+      8) count_functions_per_file ;;
+      9) list_todos_by_file ;;
+      10)
+        read -rp "Enter old pattern: " old
+        read -rp "Enter new pattern: " new
+        interactive_refactor "$old" "$new"
+        ;;
+      0) exit 0 ;;
+      *) echo -e "${RED}Invalid choice${NC}" ;;
+    esac
+  else
+    # Direct command execution
+    case "$1" in
+      todos) find_and_edit_todos ;;
+      function)
+        [[ $# -ge 2 ]] || { echo "Usage: $0 function <name>"; exit 1; }
+        find_function_usages "$2"
+        ;;
+      config) edit_config_file ;;
+      imports)
+        [[ $# -ge 2 ]] || { echo "Usage: $0 imports <module>"; exit 1; }
+        find_module_imports "$2"
+        ;;
+      recent) edit_recent_file ;;
+      json) explore_json_files ;;
+      failing) find_failing_tests ;;
+      count) count_functions_per_file ;;
+      list-todos) list_todos_by_file ;;
+      refactor)
+        [[ $# -ge 3 ]] || { echo "Usage: $0 refactor <old> <new>"; exit 1; }
+        interactive_refactor "$2" "$3"
+        ;;
+      *)
+        echo "Usage: $0 [command] [args]"
+        echo "Run without arguments for interactive menu"
+        exit 1
+        ;;
+    esac
+  fi
+}
+
+main "$@"
diff --git a/scripts/interactive-code-finder.sh b/scripts/interactive-code-finder.sh
new file mode 100755
index 0000000..c5e0f1a
--- /dev/null
+++ b/scripts/interactive-code-finder.sh
@@ -0,0 +1,436 @@
+#!/usr/bin/env bash
+#
+# interactive-code-finder.sh - Interactive ast-grep + fzf workflow
+#
+# This script provides an interactive way to search for code patterns
+# using ast-grep and select results with fzf for further action.
+
+set -euo pipefail
+
+# Colors
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+BLUE='\033[0;34m'
+CYAN='\033[0;36m'
+NC='\033[0m'
+
+# Configuration
+LANGUAGE="${LANGUAGE:-py}"
+PREVIEW_LINES=20
+
+# Helper functions
+print_header() {
+  echo -e "\n${BLUE}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
+  echo -e "${BLUE}  $1${NC}"
+  echo -e "${BLUE}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}\n"
+}
+
+print_success() {
+  echo -e "${GREEN}✓ $1${NC}"
+}
+
+print_error() {
+  echo -e "${RED}✗ $1${NC}"
+}
+
+print_info() {
+  echo -e "${CYAN}ℹ $1${NC}"
+}
+
+print_warning() {
+  echo -e "${YELLOW}⚠ $1${NC}"
+}
+
+# Check dependencies
+check_dependencies() {
+  local missing=()
+
+  for cmd in ast-grep fzf bat; do
+    if ! command -v "$cmd" &> /dev/null; then
+      missing+=("$cmd")
+    fi
+  done
+
+  if [[ ${#missing[@]} -gt 0 ]]; then
+    print_error "Missing required tools: ${missing[*]}"
+    echo
+    echo "Install with:"
+    echo "  brew install ast-grep fzf bat"
+    exit 1
+  fi
+}
+
+# Language-specific pattern examples
+get_pattern_examples() {
+  local lang="$1"
+
+  case "$lang" in
+    py|python)
+      cat <<EOF
+Function definitions:    def \$FUNC(\$\$\$):
+Class definitions:       class \$CLASS:
+Function calls:          \$FUNC(\$\$\$)
+Method calls:            \$OBJ.\$METHOD(\$\$\$)
+Imports:                 from \$MOD import \$\$\$
+Decorators:              @\$DECORATOR
+If statements:           if \$COND:
+For loops:               for \$VAR in \$ITER:
+Try/except:              try: \$\$\$ except \$EXC: \$\$\$
+Context managers:        with \$EXPR as \$VAR:
+EOF
+      ;;
+    js|javascript|ts|typescript)
+      cat <<EOF
+Function declarations:   function \$FUNC(\$\$\$) { \$\$\$ }
+Arrow functions:         (\$\$\$) => \$BODY
+Class definitions:       class \$CLASS { \$\$\$ }
+Imports:                 import \$\$ from "\$MODULE"
+Export default:          export default \$EXPR
+React components:        function \$COMP() { \$\$\$ }
+useState:                const [\$STATE, \$SETTER] = useState(\$\$\$)
+Async functions:         async function \$FUNC(\$\$\$) { \$\$\$ }
+EOF
+      ;;
+    rs|rust)
+      cat <<EOF
+Function definitions:    fn \$FUNC(\$\$\$) { \$\$\$ }
+Struct definitions:      struct \$NAME { \$\$\$ }
+Impl blocks:             impl \$TYPE { \$\$\$ }
+Trait impl:              impl \$TRAIT for \$TYPE { \$\$\$ }
+Macros:                  \$MACRO!(\$\$\$)
+Match expressions:       match \$EXPR { \$\$\$ }
+Result returns:          fn \$FUNC(\$\$\$) -> Result<\$\$\$> { \$\$\$ }
+EOF
+      ;;
+    go)
+      cat <<EOF
+Function definitions:    func \$FUNC(\$\$\$) \$\$\$ { \$\$\$ }
+Method definitions:      func (\$RECV \$TYPE) \$METHOD(\$\$\$) \$\$\$ { \$\$\$ }
+Struct definitions:      type \$NAME struct { \$\$\$ }
+Interface definitions:   type \$NAME interface { \$\$\$ }
+Goroutines:              go \$FUNC(\$\$\$)
+Defer statements:        defer \$FUNC(\$\$\$)
+Error checks:            if err != nil { \$\$\$ }
+EOF
+      ;;
+    zig)
+      cat <<EOF
+Public functions:        pub fn \$FUNC(\$\$\$) \$\$\$ { \$\$\$ }
+Struct definitions:      const \$NAME = struct { \$\$\$ };
+Error handling:          try \$EXPR
+Test blocks:             test "\$NAME" { \$\$\$ }
+Comptime:                comptime \$EXPR
+EOF
+      ;;
+    rb|ruby)
+      cat <<EOF
+Method definitions:      def \$METHOD(\$\$\$); \$\$\$; end
+Class definitions:       class \$CLASS; \$\$\$; end
+Blocks with do/end:      \$EXPR do |\$PARAM|; \$\$\$; end
+Blocks with braces:      \$EXPR { |\$PARAM| \$\$\$ }
+Rails routes:            get "\$PATH", to: "\$HANDLER"
+ActiveRecord queries:    \$MODEL.where(\$\$\$)
+EOF
+      ;;
+    *)
+      echo "Generic pattern: \$PATTERN"
+      ;;
+  esac
+}
+
+# Show pattern examples
+show_examples() {
+  print_header "Pattern Examples for $LANGUAGE"
+  get_pattern_examples "$LANGUAGE"
+  echo
+}
+
+# Interactive pattern input
+get_pattern() {
+  show_examples
+
+  print_info "Enter your ast-grep pattern (or 'examples' to see more):"
+  echo -e "${YELLOW}Examples:${NC}"
+  echo "  - def \$FUNC(\$\$\$):"
+  echo "  - class \$CLASS:"
+  echo "  - \$FUNC(\$\$\$)"
+  echo
+
+  read -rp "Pattern: " pattern
+
+  if [[ "$pattern" == "examples" ]]; then
+    show_examples
+    get_pattern
+    return
+  fi
+
+  if [[ -z "$pattern" ]]; then
+    print_error "Pattern cannot be empty"
+    exit 1
+  fi
+
+  echo "$pattern"
+}
+
+# Search with ast-grep and show results with fzf
+search_pattern() {
+  local pattern="$1"
+  local lang="$2"
+
+  print_info "Searching for: $pattern"
+  echo
+
+  # Create temporary file for results
+  local results
+  results=$(mktemp)
+
+  # Run ast-grep and save results
+  if ! ast-grep --pattern "$pattern" -l "$lang" > "$results" 2>&1; then
+    print_error "ast-grep search failed"
+    cat "$results"
+    rm "$results"
+    exit 1
+  fi
+
+  # Check if we have results
+  if [[ ! -s "$results" ]]; then
+    print_warning "No matches found for pattern: $pattern"
+    rm "$results"
+    exit 0
+  fi
+
+  # Count results
+  local count
+  count=$(wc -l < "$results")
+  print_success "Found $count match(es)"
+  echo
+
+  # Interactive selection with fzf
+  local selected
+  selected=$(cat "$results" | fzf \
+    --preview "bat --color=always --highlight-line {2} {1}" \
+    --preview-window=right:60%:wrap \
+    --delimiter : \
+    --prompt "Select file > " \
+    --header "Press Enter to open, Ctrl-Y to copy path, Ctrl-C to exit" \
+    --bind "ctrl-y:execute-silent(echo {1} | pbcopy)+abort" \
+    --bind "ctrl-/:toggle-preview" \
+    --height=100% \
+    || true)
+
+  rm "$results"
+
+  if [[ -z "$selected" ]]; then
+    print_info "No file selected"
+    exit 0
+  fi
+
+  # Extract file path and line number
+  local file line
+  file=$(echo "$selected" | cut -d: -f1)
+  line=$(echo "$selected" | cut -d: -f2)
+
+  # Show action menu
+  show_action_menu "$file" "$line" "$pattern" "$lang"
+}
+
+# Action menu for selected file
+show_action_menu() {
+  local file="$1"
+  local line="$2"
+  local pattern="$3"
+  local lang="$4"
+
+  print_header "Selected: $file:$line"
+
+  echo "What would you like to do?"
+  echo
+  echo "1. Open in editor (\$EDITOR)"
+  echo "2. Show context (20 lines)"
+  echo "3. Show all matches in file"
+  echo "4. Copy file path to clipboard"
+  echo "5. Find usages of pattern in project"
+  echo "6. Exit"
+  echo
+
+  read -rp "Choice: " choice
+
+  case "$choice" in
+    1)
+      print_info "Opening $file at line $line..."
+      ${EDITOR:-vim} "+$line" "$file"
+      ;;
+    2)
+      print_header "Context around $file:$line"
+      bat --color=always --highlight-line "$line" --line-range "$((line-10)):$((line+10))" "$file"
+      ;;
+    3)
+      print_header "All matches in $file"
+      ast-grep --pattern "$pattern" -l "$lang" "$file"
+      ;;
+    4)
+      echo -n "$file" | pbcopy
+      print_success "Copied to clipboard: $file"
+      ;;
+    5)
+      print_header "Finding usages in project..."
+      # Extract the identifier from the pattern
+      local identifier
+      identifier=$(echo "$pattern" | grep -oE '\$[A-Z_]+' | head -1 | sed 's/\$//')
+      if [[ -n "$identifier" ]]; then
+        print_info "Searching for references to: $identifier"
+        rg "\b$identifier\b" -t "$lang"
+      else
+        print_warning "Could not extract identifier from pattern"
+      fi
+      ;;
+    6)
+      print_info "Exiting..."
+      exit 0
+      ;;
+    *)
+      print_error "Invalid choice"
+      show_action_menu "$file" "$line" "$pattern" "$lang"
+      ;;
+  esac
+}
+
+# Multi-pattern search mode
+multi_pattern_search() {
+  print_header "Multi-Pattern Search"
+
+  print_info "Enter patterns (one per line, empty line to finish):"
+  local patterns=()
+
+  while true; do
+    read -rp "Pattern $(( ${#patterns[@]} + 1 )): " pattern
+    if [[ -z "$pattern" ]]; then
+      break
+    fi
+    patterns+=("$pattern")
+  done
+
+  if [[ ${#patterns[@]} -eq 0 ]]; then
+    print_error "No patterns provided"
+    exit 1
+  fi
+
+  print_info "Searching for ${#patterns[@]} pattern(s)..."
+
+  local all_results
+  all_results=$(mktemp)
+
+  for pattern in "${patterns[@]}"; do
+    ast-grep --pattern "$pattern" -l "$LANGUAGE" >> "$all_results" 2>&1 || true
+  done
+
+  # Remove duplicates and sort
+  sort -u "$all_results" | fzf \
+    --preview "bat --color=always {1}" \
+    --preview-window=right:60%:wrap \
+    --delimiter : \
+    --multi \
+    --prompt "Select files > " \
+    --header "Tab to select multiple, Enter to confirm" \
+    --bind "ctrl-a:select-all" \
+    --bind "ctrl-d:deselect-all" \
+    --height=100% \
+    || true
+
+  rm "$all_results"
+}
+
+# Help message
+show_help() {
+  cat <<EOF
+${BLUE}Interactive Code Finder${NC}
+
+Usage: $0 [OPTIONS]
+
+Options:
+  -p, --pattern PATTERN   Search for specific pattern
+  -l, --language LANG     Set language (default: py)
+  -m, --multi             Multi-pattern search mode
+  -e, --examples          Show pattern examples and exit
+  -h, --help              Show this help message
+
+Languages:
+  py, python              Python
+  js, javascript          JavaScript
+  ts, typescript          TypeScript
+  rs, rust                Rust
+  go                      Go
+  zig                     Zig
+  rb, ruby                Ruby
+
+Examples:
+  $0                                  # Interactive mode
+  $0 -p "def \$FUNC(\$\$\$):"         # Search for Python functions
+  $0 -l js -p "function \$F(\$\$\$)"  # Search for JS functions
+  $0 -m                               # Multi-pattern search
+  $0 -e                               # Show pattern examples
+
+Pattern Syntax:
+  \$VAR       - Single node (identifier, expression)
+  \$\$\$       - Zero or more nodes (variadic)
+  \$\$        - Statement sequence
+
+EOF
+}
+
+# Main function
+main() {
+  local pattern=""
+  local multi_mode=false
+
+  # Check dependencies first
+  check_dependencies
+
+  # Parse arguments
+  while [[ $# -gt 0 ]]; do
+    case "$1" in
+      -p|--pattern)
+        pattern="$2"
+        shift 2
+        ;;
+      -l|--language)
+        LANGUAGE="$2"
+        shift 2
+        ;;
+      -m|--multi)
+        multi_mode=true
+        shift
+        ;;
+      -e|--examples)
+        show_examples
+        exit 0
+        ;;
+      -h|--help)
+        show_help
+        exit 0
+        ;;
+      *)
+        print_error "Unknown option: $1"
+        show_help
+        exit 1
+        ;;
+    esac
+  done
+
+  # Multi-pattern mode
+  if [[ "$multi_mode" == true ]]; then
+    multi_pattern_search
+    exit 0
+  fi
+
+  # Get pattern if not provided
+  if [[ -z "$pattern" ]]; then
+    pattern=$(get_pattern)
+  fi
+
+  # Search
+  search_pattern "$pattern" "$LANGUAGE"
+}
+
+main "$@"