feat(10.8): add Progress Tracker — track test/doc coverage, issue close rate, dep freshness

Implements 10.8: Progress Tracker.

- Script: scripts/progress_tracker.py
- Stores weekly snapshots in metrics/snapshots/ (auto-created)
- Generates trends table in metrics/TRENDS.md
- Tracks: test-to-source ratio, doc coverage via AST, issue close rate (Gitea API), dep freshness (pip)
- Outputs stdout summary for weekly review

Usage:
    python3 scripts/progress_tracker.py
    python3 scripts/progress_tracker.py --json
    python3 scripts/progress_tracker.py --output metrics/TRENDS.md

Weekly cron: 0 9 * * 1 cd /path && python3 scripts/progress_tracker.py

Closes #173

scripts/progress_tracker.py

@@ -0,0 +1,477 @@
+#!/usr/bin/env python3
+"""
+Progress Tracker — Pipeline 10.8
+Track improvement metrics over time. Are we getting better?
+
+Metrics tracked:
+ 1. Test coverage  — % of Python functions with associated tests (test:source file ratio + line coverage if available)
+ 2. Doc coverage   — % of Python callables with docstrings (AST-based)
+ 3. Issue close rate — closed / (opened + closed) per week (Gitea API)
+ 4. Dep freshness  — % of requirements pinned vs outdated (pip list --outdated)
+
+Output:
+ - metrics/snapshots/YYYY-MM-DD.json  — one snapshot per run
+ - metrics/TRENDS.md                  — cumulative markdown table
+ - stdout summary
+
+Usage:
+    python3 scripts/progress_tracker.py
+    python3 scripts/progress_tracker.py --json
+    python3 scripts/progress_tracker.py --output metrics/TRENDS.md
+
+Weekly cron:
+    0 9 * * 1 cd /path/to/compounding-intelligence && python3 scripts/progress_tracker.py
+"""
+
+import argparse
+import json
+import os
+import re
+import subprocess
+import sys
+from collections import defaultdict
+from datetime import datetime, timezone, timedelta
+from pathlib import Path
+from typing import Any, Dict, List, Optional, Tuple
+
+# ── Configuration ──────────────────────────────────────────────────────────
+
+SCRIPT_DIR = Path(__file__).resolve().parent
+REPO_ROOT = SCRIPT_DIR.parent
+METRICS_DIR = REPO_ROOT / "metrics"
+SNAPSHOTS_DIR = METRICS_DIR / "snapshots"
+TOKEN_PATH = Path.home() / ".config" / "gitea" / "token"
+GITEA_API_BASE = "https://forge.alexanderwhitestone.com/api/v1"
+ORG = "Timmy_Foundation"
+
+# Ensure paths exist
+SNAPSHOTS_DIR.mkdir(parents=True, exist_ok=True)
+
+
+# ── Helpers ─────────────────────────────────────────────────────────────────
+
+def run_cmd(cmd: List[str], cwd: Path = REPO_ROOT) -> str:
+    """Run a shell command and return stdout (stderr merged)."""
+    result = subprocess.run(
+        cmd, capture_output=True, text=True, cwd=cwd, timeout=30
+    )
+    if result.returncode != 0:
+        return ""
+    return result.stdout.strip()
+
+
+def slugify_date(dt: datetime) -> str:
+    return dt.strftime("%Y-%m-%d")
+
+
+def snapshot_path(dt: datetime) -> Path:
+    return SNAPSHOTS_DIR / f"{slugify_date(dt)}.json"
+
+
+def load_snapshots() -> List[Dict[str, Any]]:
+    """Load all existing snapshots sorted by date."""
+    snapshots = []
+    for f in sorted(SNAPSHOTS_DIR.glob("*.json")):
+        try:
+            with open(f) as fp:
+                snapshots.append(json.load(fp))
+        except Exception:
+            continue
+    return snapshots
+
+
+# ── Metric 1: Test Coverage ─────────────────────────────────────────────────
+
+def collect_test_coverage() -> Dict[str, Any]:
+    """
+    Compute test coverage metrics.
+    Counts test_*.py and *_test.py files vs non-test .py source files.
+    Also attempts to read .coverage if present.
+    """
+    all_py = list(REPO_ROOT.rglob("*.py"))
+    
+    source_files = []
+    test_files = []
+    
+    for p in all_py:
+        try:
+            rel_parts = p.relative_to(REPO_ROOT).parts
+        except ValueError:
+            continue
+        
+        # Skip hidden/cache/temp dirs (check only relative parts)
+        if any(part.startswith('.') or part.startswith('__') for part in rel_parts):
+            continue
+        if any(part in ('node_modules', 'venv', '.venv', 'env', '.pytest_cache') for part in rel_parts):
+            continue
+        
+        if p.name.startswith("test_") or p.name.endswith("_test.py"):
+            test_files.append(p)
+        else:
+            source_files.append(p)
+    
+    # Try to get line coverage from .coverage
+    coverage_percent = None
+    coverage_tool = None
+    coverage_file = REPO_ROOT / ".coverage"
+    if coverage_file.exists():
+        try:
+            import coverage  # type: ignore
+            # Use coverage API if available
+            cov = coverage.Coverage(data_file=str(coverage_file))
+            cov.load()
+            total = cov.report()
+            coverage_percent = total if isinstance(total, float) else None
+            coverage_tool = "coverage"
+        except Exception:
+            # Fallback: parse `coverage report` output
+            out = run_cmd(["coverage", "report", "--skip-empty"])
+            if out:
+                for line in out.splitlines():
+                    if "TOTAL" in line:
+                        parts = line.split()
+                        if len(parts) >= 2:
+                            try:
+                                coverage_percent = float(parts[-1].rstrip('%'))
+                                coverage_tool = "coverage"
+                                break
+                            except ValueError:
+                                pass
+    
+    return {
+        "test_files": len(test_files),
+        "source_files": len(source_files),
+        "test_to_source_ratio": round(len(test_files) / len(source_files), 4) if source_files else 0.0,
+        "coverage_tool": coverage_tool,
+        "coverage_percent": coverage_percent,
+    }
+
+
+# ── Metric 2: Doc Coverage ──────────────────────────────────────────────────
+
+def collect_doc_coverage() -> Dict[str, Any]:
+    """
+    Check AST of Python files for docstrings.
+    Returns: callables_total, callables_with_doc, doc_coverage_percent
+    """
+    import ast
+    
+    all_py = list(REPO_ROOT.rglob("*.py"))
+    
+    source_files = []
+    test_files = []
+    
+    for p in all_py:
+        try:
+            rel_parts = p.relative_to(REPO_ROOT).parts
+        except ValueError:
+            continue
+        
+        if any(part.startswith('.') or part.startswith('__') for part in rel_parts):
+            continue
+        if any(part in ('node_modules', 'venv', '.venv', 'env', '.pytest_cache') for part in rel_parts):
+            continue
+        
+        if p.name.startswith("test_") or p.name.endswith("_test.py"):
+            test_files.append(p)
+        else:
+            source_files.append(p)
+    
+    total_callables = 0
+    with_doc = 0
+    
+    for p in source_files + test_files:
+        try:
+            with open(p) as f:
+                tree = ast.parse(f.read(), filename=str(p))
+            for node in ast.walk(tree):
+                if isinstance(node, (ast.FunctionDef, ast.AsyncFunctionDef, ast.ClassDef)):
+                    total_callables += 1
+                    doc = ast.get_docstring(node)
+                    if doc and doc.strip():
+                        with_doc += 1
+        except Exception:
+            continue
+    
+    return {
+        "callables_total": total_callables,
+        "callables_with_doc": with_doc,
+        "doc_coverage_percent": round((with_doc / total_callables * 100) if total_callables else 0.0, 2),
+    }
+
+
+# ── Metric 3: Issue Close Rate ──────────────────────────────────────────────
+
+def collect_issue_metrics() -> Dict[str, Any]:
+    """
+    Use Gitea API to get issue open/close stats for the last 7 days.
+    Returns counts and close rate.
+    """
+    token = ""
+    if TOKEN_PATH.exists():
+        token = TOKEN_PATH.read_text().strip()
+    
+    if not token:
+        return {
+            "opened_last_7d": None,
+            "closed_last_7d": None,
+            "close_rate": None,
+            "total_open": None,
+            "note": "Gitea token not available"
+        }
+    
+    try:
+        from urllib.request import Request, urlopen
+        from urllib.error import HTTPError, URLError
+    except ImportError:
+        return {"error": "urllib not available"}
+    
+    now = datetime.now(timezone.utc)
+    week_ago = now - timedelta(days=7)
+    since = week_ago.strftime("%Y-%m-%d")
+    
+    headers = {"Authorization": f"token {token}"}
+    base_url = f"{GITEA_API_BASE}/repos/{ORG}/compounding-intelligence/issues"
+    
+    try:
+        # Get issues from last 7 days
+        url = f"{base_url}?state=all&since={since}&per_page=100"
+        req = Request(url, headers=headers)
+        with urlopen(req, timeout=15) as resp:
+            issues = json.loads(resp.read())
+        
+        opened = 0
+        closed = 0
+        for issue in issues:
+            created = datetime.fromisoformat(issue["created_at"].replace("Z", "+00:00"))
+            if created >= week_ago:
+                opened += 1
+            if issue.get("state") == "closed":
+                closed_at_str = issue.get("closed_at")
+                if closed_at_str:
+                    closed_at = datetime.fromisoformat(closed_at_str.replace("Z", "+00:00"))
+                    if closed_at >= week_ago:
+                        closed += 1
+        
+        # Total open issues
+        req2 = Request(f"{base_url}?state=open&per_page=1", headers=headers)
+        with urlopen(req2, timeout=15) as resp:
+            total_open = int(resp.headers.get("X-Total-Count", "0"))
+        
+        total = opened + closed
+        close_rate = closed / total if total > 0 else 0.0
+        
+        return {
+            "opened_last_7d": opened,
+            "closed_last_7d": closed,
+            "close_rate": round(close_rate, 4),
+            "total_open": total_open,
+        }
+    except Exception as e:
+        return {
+            "opened_last_7d": None,
+            "closed_last_7d": None,
+            "close_rate": None,
+            "total_open": None,
+            "error": str(e)[:100],
+            "note": "Gitea API unavailable"
+        }
+
+
+# ── Metric 4: Dependency Freshness ─────────────────────────────────────────
+
+def collect_dep_freshness() -> Dict[str, Any]:
+    """
+    Check requirements.txt for outdated dependencies using pip list --outdated.
+    Returns freshness percentage and outdated list.
+    """
+    req_file = REPO_ROOT / "requirements.txt"
+    if not req_file.exists():
+        return {
+            "total_deps": 0,
+            "outdated_deps": 0,
+            "freshness_percent": 100.0,
+            "outdated_list": [],
+            "note": "requirements.txt not found"
+        }
+    
+    # Parse requirements (very simple: take name before comparison op)
+    reqs = []
+    with open(req_file) as f:
+        for line in f:
+            line = line.strip()
+            if not line or line.startswith("#"):
+                continue
+            m = re.match(r"^([a-zA-Z0-9_.-]+)", line)
+            if m:
+                reqs.append(m.group(1))
+    
+    if not reqs:
+        return {"total_deps": 0, "outdated_deps": 0, "freshness_percent": 100.0, "outdated_list": []}
+    
+    # Query pip for outdated packages (may fail if pip not available)
+    outdated_names = set()
+    try:
+        out = run_cmd(["pip", "list", "--outdated", "--format=json"])
+        if out:
+            data = json.loads(out)
+            outdated_names = {item["name"].lower() for item in data}
+    except Exception:
+        pass
+    
+    outdated = [p for p in reqs if p.lower() in outdated_names]
+    total = len(reqs)
+    outdated_count = len(outdated)
+    freshness = round(((total - outdated_count) / total * 100) if total else 100.0, 1)
+    
+    return {
+        "total_deps": total,
+        "outdated_deps": outdated_count,
+        "freshness_percent": freshness,
+        "outdated_list": outdated,
+    }
+
+
+# ── Snapshot & Trends ───────────────────────────────────────────────────────
+
+def take_snapshot() -> Dict[str, Any]:
+    """Collect all metrics and return a snapshot dict."""
+    now = datetime.now(timezone.utc)
+    test_cov = collect_test_coverage()
+    doc_cov = collect_doc_coverage()
+    issues = collect_issue_metrics()
+    deps = collect_dep_freshness()
+    
+    return {
+        "timestamp": now.isoformat(),
+        "date": slugify_date(now),
+        "metrics": {
+            "test_coverage": test_cov,
+            "doc_coverage": doc_cov,
+            "issues": issues,
+            "dependencies": deps,
+        }
+    }
+
+
+def save_snapshot(snapshot: Dict[str, Any]) -> Path:
+    path = snapshot_path(datetime.fromisoformat(snapshot["timestamp"]))
+    with open(path, "w") as f:
+        json.dump(snapshot, f, indent=2)
+    return path
+
+
+def generate_trends(snapshots: List[Dict[str, Any]], output_path: Optional[Path] = None) -> str:
+    """Generate markdown trends table; optionally write to file."""
+    if not snapshots:
+        msg = "# Progress Tracker — Trends\n\nNo snapshots yet. Run `progress_tracker.py` to create the first snapshot."
+        if output_path:
+            output_path.parent.mkdir(parents=True, exist_ok=True)
+            output_path.write_text(msg)
+        return msg
+    
+    lines = [
+        "# Progress Tracker — Trends",
+        f"\nLast updated: {datetime.now(timezone.utc).strftime('%Y-%m-%d %H:%M UTC')}",
+        f"\nSnapshots: {len(snapshots)}\n",
+        "| Date | Test Files → Source | Doc Coverage | Issues Closed/Opened (7d) | Dep Freshness |",
+        "|------|---------------------|--------------|---------------------------|---------------|",
+    ]
+    
+    for snap in reversed(snapshots):  # chronological
+        date = snap["date"]
+        m = snap["metrics"]
+        tc = m["test_coverage"]
+        test_str = f"{tc['test_files']}/{tc['source_files']} ({tc['test_to_source_ratio']:.2f})"
+        doc_str = f"{m['doc_coverage']['doc_coverage_percent']:.1f}%"
+        issues_str = f"{m['issues'].get('closed_last_7d','-')}/{m['issues'].get('opened_last_7d','-')}"
+        dep_str = f"{m['dependencies'].get('freshness_percent','?')}%"
+        lines.append(f"| {date} | {test_str} | {doc_str} | {issues_str} | {dep_str} |")
+    
+    # Current snapshot summary
+    cur = snapshots[-1]
+    cm = cur["metrics"]
+    lines.append(f"\n## Current Snapshot ({cur['date']})\n")
+    
+    tc = cm["test_coverage"]
+    cov_line = f"- Test coverage: {tc['coverage_percent']:.1f}% (via {tc['coverage_tool']})\n" if tc["coverage_percent"] else "- Test coverage: (pytest-cov not configured)\n"
+    lines.append(cov_line)
+    lines.append(f"- Doc coverage: {cm['doc_coverage']['doc_coverage_percent']:.1f}%")
+    
+    im = cm["issues"]
+    if im.get("close_rate") is not None:
+        lines.append(f"- Issue close rate (7d): {im['close_rate']*100:.1f}% ({im['closed_last_7d']} closed, {im['opened_last_7d']} opened)")
+    else:
+        lines.append(f"- Issue metrics: {im.get('note','unavailable')}")
+    
+    dd = cm["dependencies"]
+    lines.append(f"- Dep freshness: {dd.get('freshness_percent','?')}% outdated ({dd.get('outdated_deps',0)}/{dd.get('total_deps',0)} deps)")
+    if dd.get('outdated_list'):
+        lines.append(f"  Outdated: {', '.join(dd['outdated_list'][:5])}")
+    
+    content = "\n".join(lines) + "\n"
+    
+    if output_path:
+        output_path.parent.mkdir(parents=True, exist_ok=True)
+        output_path.write_text(content)
+    
+    return content
+
+
+# ── Main ─────────────────────────────────────────────────────────────────────
+
+def main() -> int:
+    parser = argparse.ArgumentParser(description="Progress Tracker — 10.8")
+    parser.add_argument("--json", action="store_true", help="Emit snapshot as JSON only")
+    parser.add_argument("--output", type=Path, default=METRICS_DIR / "TRENDS.md",
+                        help="Write trends markdown to this file")
+    args = parser.parse_args()
+    
+    snapshot = take_snapshot()
+    all_snapshots = load_snapshots()
+    path_written = save_snapshot(snapshot)
+    
+    if args.json:
+        print(json.dumps(snapshot, indent=2))
+        return 0
+    
+    trends = generate_trends(all_snapshots + [snapshot], output_path=args.output)
+    
+    # Print current snapshot summary
+    print(f"Snapshot saved: {path_written}\n")
+    print(f"Progress Tracker — {snapshot['date']}")
+    print("=" * 50)
+    
+    m = snapshot["metrics"]
+    tc = m["test_coverage"]
+    print(f"Test files: {tc['test_files']}  |  Source files: {tc['source_files']}  |  Ratio: {tc['test_to_source_ratio']:.3f}")
+    if tc["coverage_percent"] is not None:
+        print(f"Line coverage: {tc['coverage_percent']:.1f}%  (via {tc['coverage_tool']})")
+    else:
+        print("Line coverage: (not available — run `pytest --cov`)")
+    
+    print()
+    dc = m["doc_coverage"]
+    print(f"Callables with docstrings: {dc['callables_with_doc']}/{dc['callables_total']}  ({dc['doc_coverage_percent']:.1f}%)")
+    
+    print()
+    im = m["issues"]
+    if im.get("close_rate") is not None:
+        print(f"Issues (7d): {im['closed_last_7d']} closed / {im['opened_last_7d']} opened  → close rate: {im['close_rate']*100:.1f}%")
+        print(f"Total open: {im['total_open']}")
+    else:
+        print(f"Issues: {im.get('note','unavailable')}")
+    
+    print()
+    dd = m["dependencies"]
+    print(f"Dependencies: {dd.get('total_deps',0)} total, {dd.get('outdated_deps',0)} outdated")
+    if dd.get('outdated_list'):
+        shown = dd['outdated_list'][:5]
+        print(f"Outdated: {', '.join(shown)}" + ("..." if len(dd['outdated_list']) > 5 else ""))
+    
+    print(f"\nTrends written to: {args.output}")
+    return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())