feat(marketplace): hook migration, projman commands, optimizations [BREAKING]

Remove all SessionStart and PostToolUse hooks across the marketplace,
retaining only PreToolUse safety hooks and UserPromptSubmit quality hooks.
Add /project and /adr command families, /hygiene check, /cv status.
Create 7 new projman skills for project lifecycle management.
Remove /pm-debug, /suggest-version, /proposal-status commands.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

plugins/project-hygiene/commands/hygiene-check.md

@@ -0,0 +1,36 @@
+---
+description: Manual project hygiene check — validates file organization and cleanup
+---
+
+# /hygiene check
+
+## Purpose
+
+Manually run project hygiene checks that were previously automatic (PostToolUse hook removed per Decision #29).
+
+## Checks Performed
+
+1. **Temp file detection** — find files in project root that look temporary (*.tmp, *.bak, *.swp, *~)
+2. **Misplaced files** — files outside their expected directories per project conventions
+3. **Empty directories** — directories with no files
+4. **Large files** — files exceeding reasonable size thresholds
+5. **Debug artifacts** — leftover debug logs, console.log statements, print statements
+
+## Usage
+
+```
+/hygiene check              # Run all checks
+/hygiene check --fix        # Auto-fix safe issues (delete temp files, remove empty dirs)
+```
+
+## Output
+
+```
+Temp files: 0 found
+Misplaced files: 0 found
+Empty directories: 2 found
+Large files: 0 found
+Debug artifacts: 1 found
+
+Fixable: 2 issues (run with --fix)
+```