feat(cli): add dashboard command for visual skill health overview

New `skill-bus dashboard` command with:
- Color-coded skill health table (green/yellow/red)
- Trend indicators (↑ improving, ↓ declining, ✗ broken)
- Flagged skills section with score bar visualization
- Queue summary (pending/running/done counts)
- --no-color and --days flags
- NO_COLOR env var support

Bump version to 1.3.0.

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

Author: ShunsukeHayashi

package.json

@@ -1,6 +1,6 @@
 {
   "name": "agent-skill-bus",
-  "version": "1.2.1",
+  "version": "1.3.0",
   "description": "Self-improving task orchestration framework for AI agent systems",
   "type": "module",
   "main": "src/index.js",

src/cli.js

@@ -13,6 +13,7 @@
  *   skill-bus record-run --agent dev --skill api-caller --task "fetch" --result success --score 1.0
  *   skill-bus flagged [--days 7]
  *   skill-bus drift
+ *   skill-bus dashboard [--days 7] [--no-color]
  *   skill-bus diffs [--unprocessed]
  *   skill-bus locks [--release-expired]
  */
@@ -212,6 +213,101 @@ switch (command) {
     break;
   }
 
+  case 'dashboard': {
+    const days = parseInt(getFlag('days', '7'), 10);
+    const noColor = hasFlag('no-color') || process.env.NO_COLOR;
+    const health = monitor.analyze(days);
+    const queueStats = queue.stats();
+
+    // ANSI helpers
+    const c = noColor
+      ? { reset: '', bold: '', dim: '', red: '', green: '', yellow: '', blue: '', cyan: '', magenta: '', bgRed: '', bgGreen: '', bgYellow: '' }
+      : { reset: '\x1b[0m', bold: '\x1b[1m', dim: '\x1b[2m', red: '\x1b[31m', green: '\x1b[32m', yellow: '\x1b[33m', blue: '\x1b[34m', cyan: '\x1b[36m', magenta: '\x1b[35m', bgRed: '\x1b[41m', bgGreen: '\x1b[42m', bgYellow: '\x1b[43m' };
+
+    const bar = (score, width = 20) => {
+      const filled = Math.round(score * width);
+      const empty = width - filled;
+      const color = score >= 0.8 ? c.green : score >= 0.6 ? c.yellow : c.red;
+      return color + '█'.repeat(filled) + c.dim + '░'.repeat(empty) + c.reset;
+    };
+
+    const trendIcon = (trend) => {
+      switch (trend) {
+        case 'improving': return c.green + '↑' + c.reset;
+        case 'declining': return c.red + '↓' + c.reset;
+        case 'broken':    return c.bgRed + c.bold + ' ✗ ' + c.reset;
+        default:          return c.dim + '─' + c.reset;
+      }
+    };
+
+    const statusDot = (flagged) => flagged
+      ? c.red + '●' + c.reset
+      : c.green + '●' + c.reset;
+
+    // Header
+    console.log();
+    console.log(`${c.bold}${c.cyan}╔══════════════════════════════════════════════════════════════╗${c.reset}`);
+    console.log(`${c.bold}${c.cyan}║${c.reset}  ${c.bold}Agent Skill Bus — Dashboard${c.reset}              ${c.dim}(${days}-day window)${c.reset}  ${c.bold}${c.cyan}║${c.reset}`);
+    console.log(`${c.bold}${c.cyan}╚══════════════════════════════════════════════════════════════╝${c.reset}`);
+    console.log();
+
+    // Queue summary
+    console.log(`${c.bold}  Queue${c.reset}`);
+    console.log(`  ${c.dim}├─${c.reset} Total: ${c.bold}${queueStats.total}${c.reset}  ${c.dim}│${c.reset}  Pending: ${c.yellow}${queueStats.byStatus?.pending || 0}${c.reset}  ${c.dim}│${c.reset}  Running: ${c.blue}${queueStats.byStatus?.running || 0}${c.reset}  ${c.dim}│${c.reset}  Done: ${c.green}${queueStats.byStatus?.done || 0}${c.reset}`);
+    console.log(`  ${c.dim}└─${c.reset} Active locks: ${queueStats.activeLocks || 0}`);
+    console.log();
+
+    // Skills table
+    const entries = Object.entries(health);
+    if (entries.length === 0) {
+      console.log(`  ${c.dim}No skill runs recorded yet.${c.reset}`);
+      console.log(`  ${c.dim}Run: npx agent-skill-bus record-run --agent my-agent --skill my-skill --task "test" --result success --score 0.9${c.reset}`);
+    } else {
+      console.log(`${c.bold}  Skills${c.reset}  ${c.dim}(${entries.length} tracked)${c.reset}`);
+      console.log(`  ${c.dim}${'─'.repeat(58)}${c.reset}`);
+      console.log(`  ${c.dim}  Status  Skill                Score  Trend  Runs  Fails${c.reset}`);
+      console.log(`  ${c.dim}${'─'.repeat(58)}${c.reset}`);
+
+      // Sort: flagged first, then by score ascending
+      entries.sort((a, b) => {
+        if (a[1].flagged !== b[1].flagged) return b[1].flagged ? 1 : -1;
+        return a[1].avgScore - b[1].avgScore;
+      });
+
+      for (const [name, data] of entries) {
+        const displayName = name.length > 18 ? name.slice(0, 17) + '…' : name.padEnd(18);
+        const scoreStr = data.avgScore.toFixed(2).padStart(5);
+        const scoreColor = data.avgScore >= 0.8 ? c.green : data.avgScore >= 0.6 ? c.yellow : c.red;
+        const runsStr = String(data.runs).padStart(4);
+        const failsStr = data.consecutiveFails > 0
+          ? c.red + String(data.consecutiveFails).padStart(4) + c.reset
+          : c.dim + '   0' + c.reset;
+        console.log(`  ${statusDot(data.flagged)}  ${displayName}  ${scoreColor}${scoreStr}${c.reset}  ${trendIcon(data.trend)}     ${runsStr}  ${failsStr}`);
+      }
+      console.log(`  ${c.dim}${'─'.repeat(58)}${c.reset}`);
+
+      // Score distribution bar chart
+      const flaggedCount = entries.filter(([_, d]) => d.flagged).length;
+      const healthyCount = entries.length - flaggedCount;
+      console.log();
+      console.log(`  ${c.green}● Healthy: ${healthyCount}${c.reset}  ${c.red}● Flagged: ${flaggedCount}${c.reset}`);
+
+      if (flaggedCount > 0) {
+        console.log();
+        console.log(`  ${c.bold}${c.red}⚠ Flagged Skills${c.reset}`);
+        for (const [name, data] of entries.filter(([_, d]) => d.flagged)) {
+          const reason = data.trend === 'broken' ? 'consecutive failures'
+            : data.trend === 'declining' ? 'score declining'
+            : `avg score ${data.avgScore.toFixed(2)} < 0.70`;
+          console.log(`  ${c.red}→${c.reset} ${name}: ${reason}  ${bar(data.avgScore, 15)}`);
+        }
+      }
+    }
+
+    console.log();
+    break;
+  }
+
   case 'diffs': {
     if (hasFlag('unprocessed')) {
       output(watcher.getUnprocessed());
@@ -239,7 +335,7 @@ switch (command) {
   }
 
   default:
-    console.log(`Agent Skill Bus v1.2.0
+    console.log(`Agent Skill Bus v1.3.0
 
 Usage: skill-bus <command> [options]
        npx agent-skill-bus <command> [options]
@@ -262,6 +358,7 @@ Skill Monitoring:
   health        Update and show skill health summary
   flagged       Show skills that need attention
   drift         Detect silent score degradation
+  dashboard     Visual skill health dashboard (--days N, --no-color)
 
 Knowledge Watcher:
   diffs         Show diff stats (--unprocessed for pending)