feat: project overview + timeline + docs center

- services/task_project_linker.py: task<->project mapping (title keywords + workspace_path)
- routes/pages.py: /timeline, /docs, /docs/<path>, enhanced /projects/<name> and /tasks/<id>
- templates: timeline.html, docs.html, doc_view.html (new), project_detail.html + task_detail.html (overhauled)
- config.py: DOCS_DIRS + ProjectConfig color
- base.html: Timeline + Docs nav links

services/task_project_linker.py

@@ -0,0 +1,198 @@
+"""Task <-> Project linker.
+
+Maps kanban tasks to managed projects by title keywords + workspace_path
+substring matching. Used by /projects/<name>, /timeline, and /tasks/<id>.
+"""
+
+import logging
+import sqlite3
+import subprocess
+from typing import Any
+
+import config
+from extensions import get_db
+
+logger = logging.getLogger(__name__)
+
+_TITLE_KEYWORDS: list[tuple[str, str]] = [
+    ("blog-app", "blog-app"),
+    ("novel-app", "novel-app"),
+    ("novel-writer", "novel-app"),
+    ("hermes-dashboard", "hermes-dashboard"),
+    ("gitea", "hermes-dashboard"),
+    ("omo-openagent", "omo-openagent"),
+    ("omo-config", "omo-config"),
+    ("opencode", "omo-config"),
+]
+
+
+def link_task_to_project(task_id: str) -> str | None:
+    """Return project name for a task_id, or None if no match.
+
+    Match priority: workspace_path substring > title keyword.
+    """
+    try:
+        db = get_db()
+        row = db.execute(
+            "SELECT title, workspace_path FROM tasks WHERE id = ?", (task_id,)
+        ).fetchone()
+    except sqlite3.Error:
+        logger.exception("link_task_to_project db error for %s", task_id)
+        return None
+
+    if not row:
+        return None
+
+    title = (row["title"] or "").lower()
+    workspace = (row["workspace_path"] or "").lower()
+
+    for proj in config.MANAGED_PROJECTS:
+        proj_path = proj["path"].lower()
+        if proj_path and proj_path in workspace:
+            return proj["name"]
+
+    for keyword, project_name in _TITLE_KEYWORDS:
+        if keyword in title:
+            return project_name
+
+    return None
+
+
+def link_project_tasks(project_name: str) -> list[dict[str, Any]]:
+    """Return all tasks linked to a given project, newest first."""
+    try:
+        db = get_db()
+        rows = db.execute(
+            "SELECT id, title, status, created_at, started_at, completed_at, "
+            "workspace_path, result FROM tasks ORDER BY created_at DESC"
+        ).fetchall()
+    except sqlite3.Error:
+        logger.exception("link_project_tasks db error")
+        return []
+
+    proj = next((p for p in config.MANAGED_PROJECTS if p["name"] == project_name), None)
+    proj_path = (proj["path"] if proj else "").lower()
+
+    matched: list[dict[str, Any]] = []
+    for r in rows:
+        title = (r["title"] or "").lower()
+        workspace = (r["workspace_path"] or "").lower()
+
+        is_match = False
+        if proj_path and proj_path in workspace:
+            is_match = True
+        else:
+            for keyword, pname in _TITLE_KEYWORDS:
+                if pname == project_name and keyword in title:
+                    is_match = True
+                    break
+
+        if not is_match:
+            continue
+
+        duration_s = None
+        if r["started_at"] and r["completed_at"]:
+            duration_s = int(r["completed_at"]) - int(r["started_at"])
+
+        matched.append({
+            "task_id": r["id"],
+            "title": r["title"],
+            "status": r["status"],
+            "created_at": r["created_at"],
+            "started_at": r["started_at"],
+            "completed_at": r["completed_at"],
+            "duration_s": duration_s,
+            "outcome_summary": (r["result"] or "")[:200],
+            "workspace_path": r["workspace_path"],
+        })
+
+    return matched
+
+
+def _run_git(cwd: str, args: list[str]) -> str:
+    try:
+        result = subprocess.run(
+            ["git"] + args, cwd=cwd,
+            capture_output=True, text=True, check=False, timeout=5,
+        )
+        return result.stdout.strip() if result.returncode == 0 else ""
+    except (subprocess.TimeoutExpired, FileNotFoundError, OSError):
+        return ""
+
+
+def link_project_commits(
+    project_name: str,
+    limit: int = 20,
+    since_ts: int | None = None,
+    until_ts: int | None = None,
+) -> list[dict[str, Any]]:
+    """Return recent commits for a project, optionally filtered by time window."""
+    proj = next((p for p in config.MANAGED_PROJECTS if p["name"] == project_name), None)
+    if not proj:
+        return []
+    path = proj["path"]
+
+    fmt = "%H|%an|%ct|%s"
+    args = ["log", f"-{limit}", f"--format={fmt}"]
+    if since_ts:
+        args.append(f"--since=@{since_ts}")
+    if until_ts:
+        args.append(f"--until=@{until_ts}")
+
+    out = _run_git(path, args)
+    if not out:
+        return []
+
+    commits: list[dict[str, Any]] = []
+    for line in out.splitlines():
+        parts = line.split("|", 3)
+        if len(parts) < 4:
+            continue
+        full_hash, author, ts, subject = parts
+        commits.append({
+            "hash": full_hash,
+            "short": full_hash[:7],
+            "author": author,
+            "ts": int(ts) if ts.isdigit() else 0,
+            "subject": subject,
+            "gitea_url": f"http://localhost:3000/admin/{proj['gitea_repo']}/commit/{full_hash}",
+        })
+    return commits
+
+
+def get_task_files_changed(
+    project_name: str,
+    since_ts: int | None,
+    until_ts: int | None,
+) -> dict[str, list[str]]:
+    """Return {commit_short: [file1, file2, ...]} for commits in time window."""
+    proj = next((p for p in config.MANAGED_PROJECTS if p["name"] == project_name), None)
+    if not proj or not since_ts or not until_ts:
+        return {}
+    path = proj["path"]
+
+    args = [
+        "log",
+        f"--since=@{since_ts}",
+        f"--until=@{until_ts}",
+        "--format=%h",
+        "--name-only",
+    ]
+    out = _run_git(path, args)
+    if not out:
+        return {}
+
+    result: dict[str, list[str]] = {}
+    current_hash: str | None = None
+    for line in out.splitlines():
+        line = line.strip()
+        if not line:
+            continue
+        if len(line) <= 10 and "/" not in line and "." not in line and not line.startswith(" "):
+            if line.isalnum():
+                current_hash = line
+                result.setdefault(current_hash, [])
+                continue
+        if current_hash:
+            result[current_hash].append(line)
+    return result