chore: Improve .gitignore - remove tracked runtime files

Enhanced .gitignore to properly exclude all runtime and temporary files
from version control.

## Changes Made

### Files Removed from Tracking
- .claude-flow/metrics/*.json (runtime metrics)
- .swarm/memory.db (swarm state database)

These files were previously tracked but should never be versioned as they
contain runtime state that changes frequently.

### .gitignore Improvements

**Removed Duplicate:**
- .swarm/ was listed twice (lines 6 and 64)

**Added Patterns:**
- npm-debug.log*, yarn-debug.log*, yarn-error.log* (npm/yarn logs)
- test-results/ (Playwright test outputs)
- playwright-report/ (Playwright HTML reports)
- playwright/.cache/ (Playwright browser cache)
- *.spec.js.snap (Jest snapshots for E2E tests)
- .npm/ (npm cache directory)
- .eslintcache (ESLint cache file)
- *.tsbuildinfo (TypeScript build info)

**Reorganized Sections:**
- Clearer section headers
- Removed redundant .swarm/ entry
- Better categorization of patterns

## Benefits

✅ No more runtime files cluttering git status
✅ Cleaner git history (no metric/state changes)
✅ Better Playwright test support
✅ Comprehensive npm/yarn log exclusion
✅ Organized and maintainable .gitignore

## Verification

After this commit:
- git status should be clean
- Runtime files (.db, metrics) no longer tracked
- All test artifacts properly excluded

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

.claude-flow/metrics/agent-metrics.json

@@ -1 +0,0 @@
-{}

.claude-flow/metrics/performance.json

@@ -1,87 +0,0 @@
-{
-  "startTime": 1763888626731,
-  "sessionId": "session-1763888626731",
-  "lastActivity": 1763888626731,
-  "sessionDuration": 0,
-  "totalTasks": 1,
-  "successfulTasks": 1,
-  "failedTasks": 0,
-  "totalAgents": 0,
-  "activeAgents": 0,
-  "neuralEvents": 0,
-  "memoryMode": {
-    "reasoningbankOperations": 0,
-    "basicOperations": 0,
-    "autoModeSelections": 0,
-    "modeOverrides": 0,
-    "currentMode": "auto"
-  },
-  "operations": {
-    "store": {
-      "count": 0,
-      "totalDuration": 0,
-      "errors": 0
-    },
-    "retrieve": {
-      "count": 0,
-      "totalDuration": 0,
-      "errors": 0
-    },
-    "query": {
-      "count": 0,
-      "totalDuration": 0,
-      "errors": 0
-    },
-    "list": {
-      "count": 0,
-      "totalDuration": 0,
-      "errors": 0
-    },
-    "delete": {
-      "count": 0,
-      "totalDuration": 0,
-      "errors": 0
-    },
-    "search": {
-      "count": 0,
-      "totalDuration": 0,
-      "errors": 0
-    },
-    "init": {
-      "count": 0,
-      "totalDuration": 0,
-      "errors": 0
-    }
-  },
-  "performance": {
-    "avgOperationDuration": 0,
-    "minOperationDuration": null,
-    "maxOperationDuration": null,
-    "slowOperations": 0,
-    "fastOperations": 0,
-    "totalOperationTime": 0
-  },
-  "storage": {
-    "totalEntries": 0,
-    "reasoningbankEntries": 0,
-    "basicEntries": 0,
-    "databaseSize": 0,
-    "lastBackup": null,
-    "growthRate": 0
-  },
-  "errors": {
-    "total": 0,
-    "byType": {},
-    "byOperation": {},
-    "recent": []
-  },
-  "reasoningbank": {
-    "semanticSearches": 0,
-    "sqlFallbacks": 0,
-    "embeddingGenerated": 0,
-    "consolidations": 0,
-    "avgQueryTime": 0,
-    "cacheHits": 0,
-    "cacheMisses": 0
-  }
-}

.claude-flow/metrics/task-metrics.json

@@ -1,10 +0,0 @@
-[
-  {
-    "id": "cmd-hooks-1763888626774",
-    "type": "hooks",
-    "success": true,
-    "duration": 4.419415999999998,
-    "timestamp": 1763888626778,
-    "metadata": {}
-  }
-]

.gitignore

@@ -1,5 +1,5 @@
 
-# Claude Flow generated files
+# Claude Flow & Swarm Coordination
 .claude/settings.local.json
 .mcp.json
 claude-flow.config.json
@@ -23,10 +23,9 @@ coordination/orchestration/*
 *.sqlite-journal
 *.sqlite-wal
 claude-flow
-# Removed Windows wrapper files per user request
 hive-mind-prompt-*.txt
 
-# Chess game specific ignores
+# Project specific
 # Dependencies
 node_modules/
 package-lock.json
@@ -34,11 +33,18 @@ package-lock.json
 # Testing
 coverage/
 .nyc_output/
+test-results/
+playwright-report/
+playwright/.cache/
+*.spec.js.snap
 
 # Build outputs
 dist/
 build/
 *.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
 
 # IDE
 .vscode/
@@ -61,6 +67,10 @@ Thumbs.db
 *.temp
 
 # CI/CD artifacts
-.swarm/
 quality-report.md
 release/
+
+# Runtime & Cache
+.npm/
+.eslintcache
+*.tsbuildinfo