revert: remove codebase intelligence system

Rolled back the intel system due to overengineering concerns:
- 1200+ line hook with SQLite graph database
- 21MB sql.js dependency
- Entity generation spawning additional Claude calls
- Complex system with unclear value

Removed:
- /gsd:analyze-codebase command
- /gsd:query-intel command
- gsd-intel-index.js, gsd-intel-session.js, gsd-intel-prune.js hooks
- gsd-entity-generator, gsd-indexer agents
- entity.md template
- sql.js dependency

Preserved:
- Model profiles feature
- Statusline hook
- All other v1.9.x improvements

-3,065 lines removed

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

get-shit-done/workflows/execute-plan.md

@@ -598,8 +598,7 @@ Execute each task in the prompt. **Deviations are normal** - handle them automat
    - Continue implementing, applying rules as needed
    - Run the verification
    - Confirm done criteria met
-   - **Update intel entities** for modified files (see `<update_intel_entity>` below)
-   - **Commit the task** (see `<task_commit>` below) - includes entity files in commit
+   - **Commit the task** (see `<task_commit>` below)
    - Track task completion and commit hash for Summary documentation
    - Continue to next task
 
@@ -928,148 +927,6 @@ None - plan executed exactly as written.
 
 </deviation_documentation>
 
-<update_intel_entity>
-
-## Update Codebase Intelligence Entity
-
-**Trigger:** After each task's `<done>` criteria met, BEFORE committing.
-
-This step documents your understanding of modified files. The knowledge base self-evolves as you work.
-
-**1. Get files from the just-completed task:**
-
-Check the task's `<files>` list. If no `<files>` attribute, use `git status --short` to identify modified files.
-
-**2. For each file, determine if significant:**
-
-**Skip these patterns (not worth indexing):**
-```bash
-# Build/generated
-node_modules/*, .next/*, dist/*, build/*, .git/*
-
-# Tests (their targets are more valuable)
-*.test.*, *.spec.*, __tests__/*, __mocks__/*
-
-# Config files (change rarely, low context value)
-package.json, package-lock.json, tsconfig.json, *.config.*, *.config.js, *.config.ts
-
-# Environment and locks
-.env*, *.lock, *.log, yarn.lock, pnpm-lock.yaml
-```
-
-If file matches skip pattern: continue to next file.
-
-**3. Derive entity path:**
-
-```bash
-# Convert file path to entity filename
-# src/lib/auth.ts → src-lib-auth.md
-# app/api/users/route.ts → app-api-users-route.md
-
-FILE_PATH="$1"
-ENTITY_NAME=$(echo "$FILE_PATH" | sed 's|^[./]*||' | tr '/' '-' | sed 's/\.[^.]*$//')
-ENTITY_PATH=".planning/intel/entities/${ENTITY_NAME}.md"
-```
-
-**4. Create intel directory if needed:**
-
-```bash
-mkdir -p .planning/intel/entities
-```
-
-**5. Check if entity exists:**
-
-```bash
-if [ -f "$ENTITY_PATH" ]; then
-  ACTION="update"
-else
-  ACTION="create"
-fi
-```
-
-**6. Create or update entity:**
-
-Use template from `~/.claude/get-shit-done/templates/entity.md`.
-
-Fill fields based on what you just built:
-
-| Field | Source |
-|-------|--------|
-| `path` | Absolute path to file |
-| `type` | Infer: module, component, util, config, api, hook |
-| `updated` | Today's date (YYYY-MM-DD) |
-| `status` | active (unless you're deprecating) |
-| **Purpose** | What you understand this file does |
-| **Exports** | Extract from the code you just wrote |
-| **Dependencies** | `[[slugified-path]]` for internal, plain for external |
-| **Used By** | Add callers if you know them from this session |
-| **Notes** | Gotchas, patterns, warnings discovered |
-
-**If updating existing entity:**
-- Read current content first
-- Preserve Used By entries you didn't touch
-- Update sections that changed
-- Don't remove information unless it's wrong
-
-**7. Write entity file:**
-
-```bash
-# Write the entity content
-cat > "$ENTITY_PATH" << 'EOF'
----
-path: {path}
-type: {type}
-updated: {today}
-status: active
----
-
-# {filename}
-
-## Purpose
-
-{purpose}
-
-## Exports
-
-{exports}
-
-## Dependencies
-
-{dependencies}
-
-## Used By
-
-{used_by}
-
-## Notes
-
-{notes}
-EOF
-```
-
-**8. Verify entity was created/updated:**
-
-```bash
-head -10 "$ENTITY_PATH"
-```
-
-**9. Stage entity file:**
-
-Entity files are staged along with task code files in the task commit.
-
-```bash
-git add "$ENTITY_PATH"
-```
-
-**Error handling:**
-- If entity creation fails: Log warning, continue to task_commit
-- Entity update is NOT blocking - a failed entity shouldn't stop code from being committed
-- Log: `"Warning: Could not update entity for {file}: {reason}"`
-
-**Target size:** Keep entities concise (30-50 lines). Purpose and Exports are most valuable.
-
-</update_intel_entity>
-
 <tdd_plan_execution>
 ## TDD Plan Execution