chore: clean up .gitignore by removing unnecessary build artifacts

.gitignore

@@ -3,7 +3,6 @@ build/
 !pkg/build
 !cmd/core-gui/build
 !docs/cmd/build
-cmd/core-gui/build/bin
 .task
 vendor/
 .idea
@@ -16,23 +15,8 @@ coverage/
 coverage.out
 coverage.html
 *.cache
-/cmd/core-gui/public/dist/assets/index-CXPsZVIz.js
-/cmd/core-gui/public/dist/index.html
-/cmd/core/bin/
-/cmd/core/core
 /coverage.txt
 bin/
 tasks
-# lthn-desktop build artifacts
-!cmd/lthn-desktop/build
-cmd/lthn-desktop/build/bin/
-cmd/lthn-desktop/frontend/dist/
-cmd/lthn-desktop/frontend.old/dist/
 
-# core-demo build artifacts
-!cmd/core-demo/build
-cmd/core-demo/build/bin/
-cmd/core-demo/public/dist/
 
-# core build artifacts
-dist/

docs/.internal/TODO.md

@@ -1,56 +0,0 @@
-# CLI Documentation Status
-
-Documentation coverage for core CLI commands.
-
-## Summary
-
-| Package | Coverage | Status |
-|---------|----------|--------|
-| ai | 100% | ✓ Complete |
-| build | 50% | Partial |
-| ci | 100% | ✓ Complete |
-| dev | 100% | ✓ Complete |
-| docs | 100% | ✓ Complete |
-| doctor | 100% | ✓ Complete |
-| go | 100% | ✓ Complete |
-| php | 100% | ✓ Complete |
-| pkg | 100% | ✓ Complete |
-| sdk | 100% | ✓ Complete |
-| setup | 100% | ✓ Complete |
-| test | 100% | ✓ Complete |
-| vm | 100% | ✓ Complete |
-
-## Remaining Gaps
-
-### build
-
-| Command | Status |
-|---------|--------|
-| build from-path | Missing (legacy command) |
-| build pwa | Missing (legacy command) |
-
-These are legacy commands for PWA/GUI builds that may be deprecated.
-
-## Documentation Structure
-
-All documented packages follow this structure:
-```
-/docs/cmd/{package}/
-├── index.md          (main command + all subcommands)
-├── example.md        (optional usage examples)
-└── {subcommand}/
-    └── index.md      (detailed subcommand docs, if needed)
-```
-
-Most packages document all commands in their index.md file with anchor links.
-
-## Recent Updates
-
-- 2026-01-29: Setup wizard implemented with three modes (registry, bootstrap, repo setup)
-- 2026-01-29: CI flag renamed to --we-are-go-for-launch
-- 2026-01-29: AI command examples fixed (core dev -> core ai)
-- 2026-01-29: Added ai package documentation
-- 2026-01-29: Updated php, pkg, vm documentation with full command coverage
-- 2026-01-29: Task commands moved from dev to ai
-
-Last verified: 2026-01-29