feat: add codebase genome diff script for structural change detection

Introduces genome_diff.py — a tool for detecting structural changes between
two git refs: file-level changes, function/class signature modifications,
and dependency import changes.

Addresses #132.

scripts/genome_diff.py

@@ -0,0 +1,288 @@
+#!/usr/bin/env python3
+"""
+Codebase Genome Diff — Detect structural changes between two versions.
+
+Compares two git refs (commits, branches, tags) and produces a human-readable
+report of structural changes:
+  • Added/removed/renamed files
+  • Changed functions/classes (signature modifications)
+  • New dependencies (imports, requirements, etc.)
+
+Usage:
+    python3 scripts/genome_diff.py --ref1 <commit1> --ref2 <commit2>
+    python3 scripts/genome_diff.py --ref1 main --ref2 feature-branch
+    python3 scripts/genome_diff.py --ref1 v1.0 --ref2 v2.0 --output report.txt
+"""
+
+import argparse
+import json
+import os
+import re
+import subprocess
+import sys
+from dataclasses import dataclass, field
+from typing import List, Dict, Any, Optional
+
+SCRIPT_DIR = os.path.dirname(os.path.abspath(__file__))
+sys.path.insert(0, SCRIPT_DIR)
+from diff_analyzer import DiffAnalyzer, ChangeCategory
+
+
+@dataclass
+class FunctionChange:
+    file: str
+    name: str
+    kind: str  # 'function' or 'class'
+    change_type: str  # 'added' or 'removed' (simplified)
+    old_line: Optional[int] = None
+    new_line: Optional[int] = None
+
+
+@dataclass
+class DependencyChange:
+    file: str
+    module: str
+    change_type: str  # 'added' or 'removed' or 'modified'
+    line: int = 0
+
+
+@dataclass
+class GenomeDiffReport:
+    ref1: str
+    ref2: str
+    file_changes: List[Dict[str, Any]] = field(default_factory=list)
+    function_changes: List[FunctionChange] = field(default_factory=list)
+    dependency_changes: List[DependencyChange] = field(default_factory=list)
+    total_files_changed: int = 0
+    total_functions_changed: int = 0
+    total_dependencies_changed: int = 0
+
+    def to_dict(self) -> Dict[str, Any]:
+        return {
+            "ref1": self.ref1,
+            "ref2": self.ref2,
+            "summary": {
+                "files": self.total_files_changed,
+                "functions": self.total_functions_changed,
+                "dependencies": self.total_dependencies_changed,
+            },
+            "file_changes": self.file_changes,
+            "function_changes": [fc.__dict__ for fc in self.function_changes],
+            "dependency_changes": [dc.__dict__ for dc in self.dependency_changes],
+        }
+
+    def human_report(self) -> str:
+        lines = []
+        lines.append(f"Codebase Genome Diff: {self.ref1} → {self.ref2}")
+        lines.append("=" * 60)
+        lines.append(f"  Files changed: {self.total_files_changed}")
+        lines.append(f"  Functions changed: {self.total_functions_changed}")
+        lines.append(f"  Dependencies changed: {self.total_dependencies_changed}")
+        lines.append("")
+
+        for fc in self.file_changes:
+            kind = []
+            if fc.get('is_new'):
+                kind.append("NEW")
+            if fc.get('is_deleted'):
+                kind.append("DELETED")
+            if fc.get('is_renamed'):
+                kind.append("RENAMED")
+            if fc.get('is_binary'):
+                kind.append("BINARY")
+            kind_str = f" [{', '.join(kind)}]" if kind else ""
+            lines.append(f"  {fc['path']}{kind_str}  (+{fc['added_lines']}/-{fc['deleted_lines']})")
+        lines.append("")
+
+        for fc in self.function_changes:
+            op = {'added': '+', 'removed': '-', 'modified': '~'}.get(fc.change_type, '?')
+            lines.append(f"  [{op}] {fc.file}: {fc.kind} '{fc.name}'")
+        lines.append("")
+
+        for dc in self.dependency_changes:
+            op = '+' if dc.change_type == 'added' else '-'
+            lines.append(f"  [{op}] {dc.file}: {dc.module}")
+        lines.append("")
+
+        return "\n".join(lines)
+
+
+def run_git_diff(ref1: str, ref2: str) -> str:
+    result = subprocess.run(
+        ['git', 'diff', '--unified=0', f'{ref1}...{ref2}'],
+        capture_output=True, text=True, cwd=SCRIPT_DIR
+    )
+    if result.returncode not in (0, 1):
+        print(f"git diff failed: {result.stderr}", file=sys.stderr)
+        sys.exit(1)
+    return result.stdout
+
+
+def extract_function_changes(diff_text: str) -> List[FunctionChange]:
+    changes: List[FunctionChange] = []
+    pattern = re.compile(r'^([+\-])\s*(def|class)\s+(\w+)', re.MULTILINE)
+    hunk_header_re = re.compile(r'^@@\s+-(\d+)(?:,(\d+))?\s+\+(\d+)(?:,(\d+))?\s+@@')
+    current_old_line: Optional[int] = None
+    current_new_line: Optional[int] = None
+
+    for line in diff_text.split('\n'):
+        hdr = hunk_header_re.match(line)
+        if hdr:
+            current_old_line = int(hdr.group(1))
+            current_new_line = int(hdr.group(3))
+            continue
+        m = pattern.match(line)
+        if m:
+            op = m.group(1)
+            kind = m.group(2)
+            name = m.group(3)
+            change_type = "added" if op == '+' else "removed"
+            line_num = current_new_line if change_type == "added" else current_old_line
+            changes.append(FunctionChange(
+                file="<unknown>",
+                name=name,
+                kind=kind,
+                change_type=change_type,
+                new_line=line_num if change_type == "added" else None,
+                old_line=line_num if change_type == "removed" else None,
+            ))
+            # Advance line counters heuristically
+            if op == '-':
+                if current_old_line is not None:
+                    current_old_line += 1
+            elif op == '+':
+                if current_new_line is not None:
+                    current_new_line += 1
+        elif line.startswith(' '):
+            if current_old_line is not None:
+                current_old_line += 1
+            if current_new_line is not None:
+                current_new_line += 1
+        # lines starting with other prefixes (like \\ No newline) ignored
+    return changes
+
+
+def extract_dependency_changes(diff_text: str, analyzer: DiffAnalyzer) -> List[DependencyChange]:
+    changes: List[DependencyChange] = []
+    import_pattern = re.compile(
+        r'^([+\-])\s*(?:import\s+([\w\.]+)|from\s+([\w\.]+)\s+import)',
+        re.MULTILINE
+    )
+    file_diffs = analyzer._split_files(diff_text)
+    for file_diff in file_diffs:
+        file_match = re.search(r'^diff --git a/.*? b/(.*?)$', file_diff, re.MULTILINE)
+        if not file_match:
+            continue
+        filepath = file_match.group(1)
+
+        # Scan each line for import changes
+        for line in file_diff.split('\n'):
+            m = import_pattern.match(line)
+            if m:
+                change_type = "added" if m.group(1) == '+' else "removed"
+                module = m.group(2) or m.group(3)
+                changes.append(DependencyChange(
+                    file=filepath,
+                    module=module,
+                    change_type=change_type,
+                    line=0
+                ))
+
+        # Detect if this file is a dependency manifest
+        req_file_pattern = re.compile(
+            r'^[\+\-].*?(requirements(.*?)\.txt|pyproject\.toml|setup\.py|Pipfile)'
+        )
+        if any(req_file_pattern.match(line) for line in file_diff.split('\n')):
+            if not any(c.file == filepath and c.module == "<file>" for c in changes):
+                changes.append(DependencyChange(
+                    file=filepath,
+                    module="<file>",
+                    change_type="modified",
+                    line=0
+                ))
+    return changes
+
+
+def correlate_function_changes_with_files(diff_text: str, functions: List[FunctionChange]) -> List[FunctionChange]:
+    result: List[FunctionChange] = []
+    # Split diff into per-file sections
+    file_sections: List[tuple[str, str]] = []
+    current_file: Optional[str] = None
+    current_lines: List[str] = []
+    for line in diff_text.split('\n'):
+        if line.startswith('diff --git'):
+            if current_file is not None:
+                file_sections.append((current_file, '\n'.join(current_lines)))
+            m = re.match(r'^diff --git a/.*? b/(.*?)$', line)
+            current_file = m.group(1) if m else "unknown"
+            current_lines = [line]
+        else:
+            current_lines.append(line)
+    if current_file is not None:
+        file_sections.append((current_file, '\n'.join(current_lines)))
+
+    pattern = re.compile(r'^([+\-])\s*(def|class)\s+(\w+)', re.MULTILINE)
+    for filepath, section in file_sections:
+        for m in pattern.finditer(section):
+            op = m.group(1)
+            kind = m.group(2)
+            name = m.group(3)
+            change_type = "added" if op == '+' else "removed"
+            result.append(FunctionChange(
+                file=filepath,
+                name=name,
+                kind=kind,
+                change_type=change_type
+            ))
+    return result
+
+
+def main():
+    parser = argparse.ArgumentParser(description="Codebase Genome Diff — structural changes between versions")
+    parser.add_argument("--ref1", required=True, help="First git ref (commit, branch, tag)")
+    parser.add_argument("--ref2", required=True, help="Second git ref")
+    parser.add_argument("--output", help="Write report to file")
+    parser.add_argument("--json", action="store_true", help="Output JSON instead of human report")
+    args = parser.parse_args()
+
+    try:
+        diff_text = run_git_diff(args.ref1, args.ref2)
+    except Exception as e:
+        print(f"Error: {e}", file=sys.stderr)
+        sys.exit(1)
+
+    if not diff_text.strip():
+        print(f"No differences between {args.ref1} and {args.ref2}.")
+        sys.exit(0)
+
+    analyzer = DiffAnalyzer()
+    summary = analyzer.analyze(diff_text)
+
+    file_changes = [fc.to_dict() for fc in summary.files]
+    func_changes = extract_function_changes(diff_text)
+    func_changes = correlate_function_changes_with_files(diff_text, func_changes)
+    dep_changes = extract_dependency_changes(diff_text, analyzer)
+
+    report = GenomeDiffReport(
+        ref1=args.ref1,
+        ref2=args.ref2,
+        file_changes=file_changes,
+        function_changes=func_changes,
+        dependency_changes=dep_changes,
+        total_files_changed=len(file_changes),
+        total_functions_changed=len(func_changes),
+        total_dependencies_changed=len(dep_changes),
+    )
+
+    output = json.dumps(report.to_dict(), indent=2) if args.json else report.human_report()
+
+    if args.output:
+        with open(args.output, 'w') as f:
+            f.write(output + '\n')
+        print(f"Report written to {args.output}")
+    else:
+        print(output)
+
+
+if __name__ == '__main__':
+    main()

scripts/progress_tracker.py

@@ -1,477 +0,0 @@
-#!/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())