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hooks/examples/context/session-start.md

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+# Session Start Context
+
+This file provides environment context at the beginning of each Claude Code session.
+
+## Plugin Environment
+
+**CLAUDE_PLUGIN_ROOT:** `${pwd}`
+
+This variable points to the root directory of the CipherPowers plugin installation.
+
+## Path Reference Convention
+
+When referencing plugin files in agents, commands, or skills, always use:
+
+```markdown
+@${CLAUDE_PLUGIN_ROOT}skills/skill-name/SKILL.md
+@${CLAUDE_PLUGIN_ROOT}standards/standard-name.md
+@${CLAUDE_PLUGIN_ROOT}principles/principle-name.md
+@${CLAUDE_PLUGIN_ROOT}templates/template-name.md
+```
+
+**Do NOT use relative paths without the variable:**
+```markdown
+@skills/...  ❌ Does not work in subagent contexts
+```
+
+## Usage
+
+Copy this file to your project's `.claude/context/` directory to inject plugin environment information at session start:
+
+```bash
+mkdir -p .claude/context
+cp ${CLAUDE_PLUGIN_ROOT}hooks/examples/context/session-start.md \
+   .claude/context/session-start.md
+```
+
+**Note:** SessionStart is not currently a supported hook in Claude Code. This file serves as a template for injecting environment context via other hooks (e.g., UserPromptSubmit, SlashCommandStart).
+
+## Alternative: User Prompt Hook
+
+If SessionStart hook becomes available, this context will auto-inject. Until then, consider using UserPromptSubmit hook or command-specific context injection.