v1.15.2 — add Claude CLI status line, Zed support, rename 3b-review to review

- Status line: new src/statusline-claude/ (Planny box-star mascot icon), install/uninstall wiring in install.js, Install All (A) + Custom (S) - Zed agent support across README, AGENTS, docs, init prompt, installer - Rename /plan2code-3b-review to /plan2code-review (now a standalone utility workflow); update file, reference dir, and all cross-references - install.js: fs.rmSync simplifications, async install, summary cleanup - Bump to v1.15.2; CHANGELOG entries for v1.15.0/1/2
2026-07-21 18:33:22 -07:00 · 2026-06-01 16:39:35 -07:00
parent 5e48e98293
commit 25d874d87d
21 changed files with 1029 additions and 136 deletions
@@ -204,7 +204,7 @@ On user "approved":
 4. **If more phases:** "NEXT STEP: Start NEW conversation and run: `/plan2code-3-implement`"
 5. **If final phase:** "NEXT STEP: Start NEW conversation and run: `/plan2code-4-finalize`"
 6. Mention `/plan2code-1b-revise-plan` option
-7. Suggest: "Optional: run `/plan2code-3b-review` for a post-phase code review -- recommended after key features or milestones."
+7. Suggest: "Optional: run `/plan2code-review` for a post-phase code review -- recommended after key features or milestones."

 Planny (continuing):
 ```
@@ -10,7 +10,7 @@ Start all CREATE AGENTS MODE responses with '💡'
    ╰───╯
 ```

-Analyze this codebase and create `AGENTS.md` to guide future AI coding agents (Claude Code, Codex, Gemini CLI, Devin, etc.).
+Analyze this codebase and create `AGENTS.md` to guide future AI coding agents (Claude Code, Codex, Gemini CLI, Devin, Zed, etc.).

 ## Content

@@ -31,7 +31,7 @@ Prefix the file with:
 ```
 # AGENTS.md

-This file provides guidance to AI coding agents like Claude Code (claude.ai/code), Cursor AI, Codex, Gemini CLI, GitHub Copilot, Devin, and other AI coding assistants when working with code in this repository.
+This file provides guidance to AI coding agents like Claude Code (claude.ai/code), Cursor AI, Codex, Gemini CLI, GitHub Copilot, Devin, Zed, and other AI coding assistants when working with code in this repository.
 ```

 ---
@@ -1,5 +1,5 @@
 # Dimension Checklists
-> Part of plan2code-3b-review — loaded during Step 3 (Analyze).
+> Part of plan2code-review — loaded during Step 3 (Analyze).

 Non-obvious check items, anti-patterns, and "don't flag" guidance for each review dimension. Focus on what LLMs commonly miss.

@@ -1,5 +1,5 @@
 # False-Positive Catalog
-> Part of plan2code-3b-review — loaded before presenting findings in Step 3 (Analyze).
+> Part of plan2code-review — loaded before presenting findings in Step 3 (Analyze).

 Check every finding against this catalog before presenting it. These patterns represent common categories of false findings that waste reviewer and developer time. Each entry includes the bias, a concrete example, why it's wrong, and how to verify before flagging.

@@ -1,5 +1,5 @@
 # Verification Protocol
-> Part of plan2code-3b-review — loaded during Step 3 (Analyze).
+> Part of plan2code-review — loaded during Step 3 (Analyze).

 Apply this protocol to every finding before presenting it. Findings that fail verification are dropped. No exceptions.

@@ -0,0 +1,167 @@
+# Plan2Code Status Line (Claude CLI)
+
+A persistent three-line status bar for Claude Code that displays model info, project context, context window usage, usage stats (rate limits or token counts), and git diff stats.
+
+## Example Output
+
+**Pro / Max / Teams** — rate limits segment:
+
+```
+╭─╮  Opus 4.6 │ plan2code │ feature/statusline │ +12 -3
+│★│  ┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄
+╰─╯  3h 5m ($4.62) │ ▰▰▰▰▰▱▱▱▱▱▱▱ 42% │ 5h: 28% · 7d: 61%
+```
+
+**Enterprise / Bedrock / Vertex / PAYG** — session token counts (no `rate_limits` in stdin):
+
+```
+╭─╮  Sonnet 4.5 │ plan2code │ main │ +12 -3
+│★│  ┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄
+╰─╯  2m ($0.18) │ ▰▰▱▱▱▱▱▱▱▱▱▱ 18% │ 88k in · 3k out
+```
+
+**Line 1:** Planny icon | Model name | Project name | Git branch | Uncommitted changes
+**Line 2:** Planny icon | Gray separator
+**Line 3:** Planny icon | Session duration + cost | Context window bar | Usage (rate limits or token counts)
+
+## Installation
+
+### Via install.js (Recommended)
+
+```bash
+node install.js
+# Select A (Install All + dev tools) or C (Custom) → S (Status Line)
+```
+
+This automatically:
+1. Copies `statusline.js` → `~/.claude/plan2code-statusline.js`
+2. Creates default config at `~/.claude/statusline-config.json` (preserves existing)
+3. Registers the status line in `~/.claude/settings.json` (atomic write)
+
+### Manual Setup
+
+1. Copy `statusline.js` → `~/.claude/plan2code-statusline.js`
+2. Copy `statusline-config.json` → `~/.claude/statusline-config.json`
+3. Add to `~/.claude/settings.json`:
+   ```json
+   {
+     "statusLine": {
+       "type": "command",
+       "command": "node /path/to/home/.claude/plan2code-statusline.js"
+     }
+   }
+   ```
+
+## Configuration
+
+Edit `~/.claude/statusline-config.json`:
+
+```json
+{
+  "autocompactBuffer": 33000,
+  "color": true,
+  "compact": false,
+  "items": {
+    "model": true,
+    "project": true,
+    "branch": true,
+    "contextBar": true,
+    "planUsage": true,
+    "linesChanged": true,
+    "duration": true,
+    "sessionCost": true
+  }
+}
+```
+
+| Option | Default | Description |
+|--------|---------|-------------|
+| `autocompactBuffer` | `33000` | Autocompact buffer size in tokens. Context bar scales usable window = total − buffer. Adjust to match your model's autocompact buffer. |
+| `color` | `true` | Enable ANSI color output. Set `false` for monochrome. The `NO_COLOR` environment variable (per [no-color.org](https://no-color.org)) also disables color. |
+| `compact` | `false` | Two-line mode — drops the mascot icons and the separator line. Goes from 3 lines to 2, no horizontal truncation. |
+| `items.model` | `true` | Show model name (Opus, Sonnet, Haiku) |
+| `items.project` | `true` | Show project directory name |
+| `items.branch` | `true` | Show current git branch (falls back to short SHA when detached HEAD) |
+| `items.contextBar` | `true` | Show context window usage bar with percentage |
+| `items.planUsage` | `true` | Show usage info: rate limits (Pro/Max) or token counts (Bedrock/Vertex/PAYG) |
+| `items.linesChanged` | `true` | Show uncommitted git diff stats (+added -removed) |
+| `items.duration` | `true` | Show session duration |
+| `items.sessionCost` | `true` | Append estimated session cost in parens next to duration (e.g. `49m ($4.62)`). Reads `cost.total_cost_usd` from Claude Code stdin — client-side estimate, not billing-exact. Session-scoped only; monthly enterprise totals are not exposed by Claude Code. Hidden when cost is 0 or unavailable. |
+
+Malformed config falls back to defaults silently. Type errors on individual keys also fall back to defaults.
+
+## Platform Support
+
+| Platform | Status | Notes |
+|----------|--------|-------|
+| Claude Code | Supported | Full feature set via `settings.json` registration |
+| Copilot CLI | Planned | Deferred — CLI lacks status line script support as of v0.0.421 |
+| Others | Not supported | Codex CLI, Gemini CLI have built-in status, not scriptable |
+
+## Usage Display
+
+The usage segment reads data directly from Claude Code's stdin JSON — no API calls, no auth needed, no background processes.
+
+Two display modes are automatically selected based on the data present in stdin:
+
+| User Type | Condition | Display Format | Data Source |
+|-----------|-----------|----------------|-------------|
+| Pro/Max/Teams | `rate_limits` present in stdin | `5h: 28% · 7d: 61%` | `rate_limits.five_hour.used_percentage`, `rate_limits.seven_day.used_percentage` |
+| Bedrock/Vertex/PAYG | No `rate_limits` in stdin | `12k in · 4k out` | `context_window.total_input_tokens`, `context_window.total_output_tokens` |
+
+### Color Thresholds
+
+- Rate limits: green < 60%, yellow 60–79%, red 80%+
+- Token counts: neutral/white (no thresholds)
+- Context bar: green < 50%, yellow 50–69%, red 70%+
+
+## Debugging
+
+The bundled script accepts two diagnostic flags for local testing:
+
+```bash
+# Print parsed stdin and merged config to stderr
+echo '{"model":{"display_name":"Opus 4.6"}}' | node ~/.claude/plan2code-statusline.js --debug
+
+# Load a fixture file instead of reading from stdin
+node ~/.claude/plan2code-statusline.js --fixture ./fixture.json
+node ~/.claude/plan2code-statusline.js --fixture ./fixture.json --debug
+```
+
+Fixture format = whatever Claude Code sends on stdin (JSON with `model`, `workspace`, `context_window`, `rate_limits`, `cost.total_duration_ms`).
+
+## Troubleshooting
+
+| Issue | Solution |
+|-------|----------|
+| Garbled ANSI codes in output | Set `"color": false` in config, or export `NO_COLOR=1` |
+| Status line not appearing | Verify `~/.claude/settings.json` has `statusLine` key with correct path to `plan2code-statusline.js` |
+| Slow execution (>100ms) | Git calls are timeout-bounded to 1.5s each; non-repos short-circuit via `.git` directory check. If still slow, disable `branch` or `linesChanged`. |
+| Usage segment not showing | Rate limits require Pro/Max/Teams plan. Token counts require at least one assistant message. Use `--debug` to inspect stdin. |
+| Wrong context bar percentage | Adjust `autocompactBuffer` to match your model. Default 33000 tokens. |
+| Three lines take too much space | Set `"compact": true` to drop the mascot icons + separator line (3 lines → 2). |
+
+## Architecture
+
+```
+src/statusline-claude/
+├── statusline.js           # Self-contained: config, git, formatters, render
+└── statusline-config.json  # Default config template
+```
+
+Single-file design — `statusline.js` is copied verbatim to `~/.claude/plan2code-statusline.js` on install. No bundler, no runtime dependencies.
+
+## Uninstalling
+
+### Via install.js
+
+```bash
+node install.js
+# Select U (Uninstall) → confirms removal
+```
+
+### Manual Removal
+
+1. Remove `statusLine` key from `~/.claude/settings.json`
+2. Delete `~/.claude/plan2code-statusline.js`
+3. Optionally delete `~/.claude/statusline-config.json`
@@ -0,0 +1,15 @@
+{
+  "autocompactBuffer": 33000,
+  "color": true,
+  "compact": false,
+  "items": {
+    "model": true,
+    "project": true,
+    "branch": true,
+    "contextBar": true,
+    "planUsage": true,
+    "linesChanged": true,
+    "duration": true,
+    "sessionCost": true
+  }
+}
@@ -0,0 +1,425 @@
+#!/usr/bin/env node
+
+const fs = require('fs');
+const os = require('os');
+const path = require('path');
+const { execFileSync } = require('child_process');
+
+// ============================================================================
+// Constants
+// ============================================================================
+
+const CONTEXT_BAR_LEN = 12;
+const CONTEXT_THRESHOLDS = { green: 50, yellow: 70 };
+const RATE_LIMIT_THRESHOLDS = { green: 60, yellow: 80 };
+const GIT_TIMEOUT_MS = 1500;
+const DEFAULT_WINDOW_SIZE = 200000;
+const SEPARATOR_WIDTH = 55;
+
+// ============================================================================
+// Config
+// ============================================================================
+
+const DEFAULTS = {
+  autocompactBuffer: 33000,
+  color: true,
+  compact: false,
+  items: {
+    model: true,
+    project: true,
+    branch: true,
+    contextBar: true,
+    planUsage: true,
+    linesChanged: true,
+    duration: true,
+    sessionCost: true,
+  },
+};
+
+function loadConfig() {
+  const configPath = path.join(os.homedir(), '.claude', 'statusline-config.json');
+  let merged = { ...DEFAULTS, items: { ...DEFAULTS.items } };
+
+  try {
+    const raw = fs.readFileSync(configPath, 'utf8');
+    const user = JSON.parse(raw);
+    merged = {
+      ...DEFAULTS,
+      ...user,
+      items: { ...DEFAULTS.items, ...(user.items || {}) },
+    };
+  } catch {
+    // Fall through to defaults
+  }
+
+  // Type validation with fallback
+  if (!Number.isInteger(merged.autocompactBuffer) || merged.autocompactBuffer < 0 || merged.autocompactBuffer >= 1_000_000) {
+    merged.autocompactBuffer = DEFAULTS.autocompactBuffer;
+  }
+  if (typeof merged.color !== 'boolean') merged.color = DEFAULTS.color;
+  if (typeof merged.compact !== 'boolean') merged.compact = DEFAULTS.compact;
+  for (const key of Object.keys(DEFAULTS.items)) {
+    if (typeof merged.items[key] !== 'boolean') merged.items[key] = DEFAULTS.items[key];
+  }
+
+  // NO_COLOR convention (https://no-color.org) — env trumps config
+  if (process.env.NO_COLOR !== undefined && process.env.NO_COLOR !== '') {
+    merged.color = false;
+  }
+
+  return merged;
+}
+
+// ============================================================================
+// Colors
+// ============================================================================
+
+const rgb = (r, g, b) => `\x1b[38;2;${r};${g};${b}m`;
+const C = {
+  reset: '\x1b[0m',
+  bold: '\x1b[1m',
+  dim: '\x1b[2m',
+  green: '\x1b[32m',
+  yellow: '\x1b[33m',
+  red: '\x1b[31m',
+  cyan: '\x1b[36m',
+  white: '\x1b[37m',
+  gray: '\x1b[90m',
+  // Plan2Code brand
+  teal: rgb(190, 192, 200),     // Silver — repo
+  sky: rgb(120, 195, 255),      // Light sky blue — branch
+  muted: rgb(40, 120, 200),     // Mid blue — model
+  label: rgb(130, 135, 150),    // Mid gray — field labels (5h, 7d)
+  // Bar & quota thresholds
+  barGreen: rgb(50, 220, 100),
+  barYellow: rgb(220, 180, 50),
+  barRed: rgb(220, 80, 70),
+  // Planny mascot
+  sGreen: rgb(60, 200, 120),
+  sBlue: rgb(50, 100, 200),
+  sEye: rgb(255, 255, 255),
+};
+
+const SEP = (config) => config.color ? `${C.gray} │ ${C.reset}` : ' │ ';
+const DOT = (config) => config.color ? `${C.gray} · ${C.reset}` : ' · ';
+
+// ============================================================================
+// Git helpers
+// ============================================================================
+
+function gitExec(args, cwd) {
+  try {
+    return execFileSync('git', args, {
+      cwd,
+      timeout: GIT_TIMEOUT_MS,
+      encoding: 'utf8',
+      stdio: ['pipe', 'pipe', 'pipe'],
+      windowsHide: true,
+    }).trim();
+  } catch {
+    return null;
+  }
+}
+
+function isGitRepo(cwd) {
+  try {
+    // Walk up parent dirs (bounded) — monorepos open Claude Code in a subdir
+    // where .git lives at the repo root. .git can be a directory or a file.
+    let dir = cwd;
+    for (let i = 0; i < 10; i++) {
+      if (fs.existsSync(path.join(dir, '.git'))) return true;
+      const parent = path.dirname(dir);
+      if (parent === dir) return false;
+      dir = parent;
+    }
+    return false;
+  } catch {
+    return false;
+  }
+}
+
+function getGitBranch(stdinData) {
+  const cwd = stdinData?.workspace?.project_dir || process.cwd();
+  if (!isGitRepo(cwd)) return '';
+  const branch = gitExec(['symbolic-ref', '--short', 'HEAD'], cwd);
+  if (branch) return branch;
+  // Detached HEAD fallback — show short SHA so branch segment isn't empty
+  const sha = gitExec(['rev-parse', '--short', 'HEAD'], cwd);
+  return sha || '';
+}
+
+// ============================================================================
+// Formatters
+// ============================================================================
+
+function getModelName(stdinData) {
+  const raw = stdinData?.model;
+  if (!raw) return '';
+
+  if (typeof raw === 'object' && raw.display_name) {
+    return raw.display_name.replace(/ context\)/gi, ')');
+  }
+
+  const model = typeof raw === 'object' ? raw.id : raw;
+  if (!model || typeof model !== 'string') return '';
+
+  const claudeMatch = model.match(/^claude-(\w+)-/);
+  if (claudeMatch) {
+    return claudeMatch[1].charAt(0).toUpperCase() + claudeMatch[1].slice(1);
+  }
+
+  const gptMatch = model.match(/^(gpt-[\w.]+)/i);
+  if (gptMatch) {
+    return gptMatch[1].toUpperCase();
+  }
+
+  return model;
+}
+
+function getProjectName(stdinData) {
+  const projectDir = stdinData?.workspace?.project_dir;
+  if (!projectDir || typeof projectDir !== 'string') return '';
+  return path.basename(projectDir);
+}
+
+function calculateContextPercent(stdinData, config) {
+  const cw = stdinData?.context_window;
+  if (!cw) return null;
+  const windowSize = cw.context_window_size || DEFAULT_WINDOW_SIZE;
+  const buffer = config?.autocompactBuffer ?? DEFAULTS.autocompactBuffer;
+  const usableTokens = windowSize - buffer;
+  if (usableTokens <= 0) return 100;
+  const rawUsedPct = cw.used_percentage ?? 0;
+  const rawUsedTokens = (rawUsedPct / 100) * windowSize;
+  return Math.round(Math.min(100, (rawUsedTokens / usableTokens) * 100));
+}
+
+function formatContextBar(percent, config) {
+  if (percent == null) return null;
+
+  const clamped = Math.max(0, Math.min(100, percent));
+  const filled = Math.round((clamped / 100) * CONTEXT_BAR_LEN);
+  const filledStr = '▰'.repeat(filled);
+  const emptyStr = '▱'.repeat(CONTEXT_BAR_LEN - filled);
+
+  if (!config.color) return `${filledStr}${emptyStr} ${clamped}%`;
+
+  const barColor = clamped >= CONTEXT_THRESHOLDS.yellow ? C.barRed
+    : clamped >= CONTEXT_THRESHOLDS.green ? C.barYellow
+    : C.barGreen;
+  return `${barColor}${filledStr}${C.gray}${emptyStr}${C.reset} ${barColor}${clamped}%${C.reset}`;
+}
+
+function formatLinesChanged(stdinData, config) {
+  const cwd = stdinData?.workspace?.project_dir || process.cwd();
+  if (!isGitRepo(cwd)) return null;
+  const raw = gitExec(['diff', 'HEAD', '--numstat'], cwd);
+  if (raw == null) return null;
+
+  let added = 0, removed = 0;
+  for (const line of raw.split('\n')) {
+    if (!line) continue;
+    const [a, r] = line.split('\t');
+    if (a !== '-') added += parseInt(a, 10) || 0;
+    if (r !== '-') removed += parseInt(r, 10) || 0;
+  }
+  if (added === 0 && removed === 0) return null;
+  if (!config.color) return `+${added} -${removed}`;
+  return `${C.green}+${added}${C.reset} ${C.red}-${removed}${C.reset}`;
+}
+
+function formatSessionCost(stdinData) {
+  const usd = stdinData?.cost?.total_cost_usd;
+  if (usd == null || isNaN(usd) || usd <= 0) return null;
+  if (usd < 0.01) return '<$0.01';
+  if (usd < 100) return `$${usd.toFixed(2)}`;
+  return `$${Math.round(usd)}`;
+}
+
+function formatDuration(stdinData, config) {
+  const ms = stdinData?.cost?.total_duration_ms;
+  if (!ms) return null;
+
+  const totalSec = Math.round(ms / 1000);
+  let text;
+  if (totalSec < 60) text = `${totalSec}s`;
+  else {
+    const hours = Math.floor(totalSec / 3600);
+    const mins = Math.floor((totalSec % 3600) / 60);
+    text = hours > 0 ? `${hours}h ${mins}m` : `${mins}m`;
+  }
+
+  // Append session cost in parens when enabled: "49m ($4.62)"
+  if (config.items.sessionCost) {
+    const cost = formatSessionCost(stdinData);
+    if (cost) {
+      text = config.color
+        ? `${C.label}${text} (${cost})${C.reset}`
+        : `${text} (${cost})`;
+      return text;
+    }
+  }
+  return config.color ? `${C.label}${text}${C.reset}` : text;
+}
+
+function colorize(text, percent, thresholds, config) {
+  if (!config.color || percent == null) return text;
+  let code;
+  if (percent >= thresholds.yellow) code = C.barRed;
+  else if (percent >= thresholds.green) code = C.barYellow;
+  else code = C.barGreen;
+  return `${code}${text}${C.reset}`;
+}
+
+function formatTokenCount(n) {
+  if (n == null || isNaN(n) || n < 0) return '0';
+  if (n < 1000) return String(Math.round(n));
+  if (n < 999500) return Math.round(n / 1000) + 'k';
+  return (n / 1_000_000).toFixed(1) + 'M';
+}
+
+function formatRateLimits(stdinData, config) {
+  if (!config.items.planUsage) return null;
+  const fiveHour = stdinData?.rate_limits?.five_hour?.used_percentage;
+  const sevenDay = stdinData?.rate_limits?.seven_day?.used_percentage;
+  if (fiveHour == null && sevenDay == null) return null;
+
+  const parts = [];
+  if (fiveHour != null) {
+    const pct = Math.round(fiveHour);
+    const val = colorize(`${pct}%`, pct, RATE_LIMIT_THRESHOLDS, config);
+    parts.push(config.color ? `${C.label}5h:${C.reset} ${val}` : `5h: ${pct}%`);
+  }
+  if (sevenDay != null) {
+    const pct = Math.round(sevenDay);
+    const val = colorize(`${pct}%`, pct, RATE_LIMIT_THRESHOLDS, config);
+    parts.push(config.color ? `${C.label}7d:${C.reset} ${val}` : `7d: ${pct}%`);
+  }
+  return parts.join(DOT(config));
+}
+
+function formatTokenUsage(stdinData, config) {
+  if (!config.items.planUsage) return null;
+  const inp = stdinData?.context_window?.total_input_tokens;
+  const out = stdinData?.context_window?.total_output_tokens;
+  if ((!inp || inp === 0) && (!out || out === 0)) return null;
+  const inStr = formatTokenCount(inp || 0);
+  const outStr = formatTokenCount(out || 0);
+  if (!config.color) return `${inStr} in${DOT(config)}${outStr} out`;
+  return `${C.white}${inStr}${C.reset} ${C.label}in${C.reset}${DOT(config)}${C.white}${outStr}${C.reset} ${C.label}out${C.reset}`;
+}
+
+function formatLine1(stdinData, config) {
+  const segments = [];
+
+  if (config.items.model) {
+    const model = getModelName(stdinData);
+    if (model) segments.push(config.color ? `${C.muted}${model}${C.reset}` : model);
+  }
+
+  if (config.items.project) {
+    const project = getProjectName(stdinData);
+    if (project) segments.push(config.color ? `${C.bold}${C.teal}${project}${C.reset}` : project);
+  }
+
+  if (config.items.branch) {
+    const branch = getGitBranch(stdinData);
+    if (branch) segments.push(config.color ? `${C.sky}${branch}${C.reset}` : branch);
+  }
+
+  if (config.items.linesChanged) {
+    const lines = formatLinesChanged(stdinData, config);
+    if (lines) segments.push(lines);
+  }
+
+  return segments.join(SEP(config));
+}
+
+function formatLine2(stdinData, config) {
+  const segments = [];
+
+  if (config.items.duration) {
+    const dur = formatDuration(stdinData, config);
+    if (dur) segments.push(dur);
+  }
+
+  if (config.items.contextBar) {
+    const percent = calculateContextPercent(stdinData, config);
+    const bar = formatContextBar(percent, config);
+    if (bar) segments.push(bar);
+  }
+
+  if (config.items.planUsage) {
+    const usage = formatRateLimits(stdinData, config) || formatTokenUsage(stdinData, config);
+    if (usage) segments.push(usage);
+  }
+
+  return segments.join(SEP(config));
+}
+
+// ============================================================================
+// Main
+// ============================================================================
+
+function loadStdin() {
+  // --fixture <path> for local diagnostics (bypasses stdin)
+  const fixtureIdx = process.argv.indexOf('--fixture');
+  if (fixtureIdx !== -1 && process.argv[fixtureIdx + 1]) {
+    try {
+      return JSON.parse(fs.readFileSync(process.argv[fixtureIdx + 1], 'utf8'));
+    } catch (err) {
+      process.stderr.write(`[statusline] fixture load failed: ${err.message}\n`);
+      process.exit(1);
+    }
+  }
+  try {
+    return JSON.parse(fs.readFileSync(0, 'utf8'));
+  } catch {
+    return null;
+  }
+}
+
+function main() {
+  const debug = process.argv.includes('--debug');
+  const stdinData = loadStdin();
+  if (!stdinData) process.exit(0);
+
+  const config = loadConfig();
+
+  if (debug) {
+    process.stderr.write('[statusline debug] parsed stdin:\n');
+    process.stderr.write(JSON.stringify(stdinData, null, 2) + '\n');
+    process.stderr.write('[statusline debug] merged config:\n');
+    process.stderr.write(JSON.stringify(config, null, 2) + '\n');
+  }
+
+  const line1 = formatLine1(stdinData, config);
+  const line2 = formatLine2(stdinData, config);
+  if (!line1 && !line2) return;
+
+  if (config.compact) {
+    if (line1) process.stdout.write(line1 + '\n');
+    if (line2) process.stdout.write(line2 + '\n');
+    return;
+  }
+
+  if (config.color) {
+    const ico1 = `${C.sGreen}╭─╮${C.reset} `;
+    const ico2 = `${C.sGreen}│${C.sEye}★${C.sGreen}│${C.reset} `;
+    const ico3 = `${C.sGreen}╰─╯${C.reset} `;
+    const pad = `${C.gray}${'┄'.repeat(SEPARATOR_WIDTH)}${C.reset}`;
+    process.stdout.write(ico1 + line1 + '\n' + ico2 + pad + '\n' + ico3 + line2 + '\n');
+  } else {
+    const ico1 = '╭─╮ ';
+    const ico2 = '│★│ ';
+    const ico3 = '╰─╯ ';
+    const pad = '┄'.repeat(SEPARATOR_WIDTH);
+    process.stdout.write(ico1 + line1 + '\n' + ico2 + pad + '\n' + ico3 + line2 + '\n');
+  }
+}
+
+try {
+  main();
+} catch {
+  process.exit(0);
+}