feat: publish Dever core with project scaffolding and versioned AI skills

.trellis/scripts/common/paths.py

@@ -0,0 +1,543 @@
+#!/usr/bin/env python3
+"""
+Common path utilities for Trellis workflow.
+
+Provides:
+    get_repo_root          - Get repository root directory
+    get_developer          - Get developer name
+    get_workspace_dir      - Get developer workspace directory
+    get_tasks_dir          - Get tasks directory
+    get_active_journal_file - Get current journal file
+"""
+
+from __future__ import annotations
+
+import os
+import re
+from datetime import datetime
+from pathlib import Path
+
+from .git import main_worktree_root
+
+
+# =============================================================================
+# Path Constants (change here to rename directories)
+# =============================================================================
+
+# Directory names
+DIR_WORKFLOW = ".trellis"
+DIR_WORKSPACE = "workspace"
+DIR_TASKS = "tasks"
+DIR_ARCHIVE = "archive"
+DIR_SPEC = "spec"
+DIR_SCRIPTS = "scripts"
+
+# File names
+FILE_DEVELOPER = ".developer"
+FILE_CURRENT_TASK = ".current-task"
+FILE_TASK_JSON = "task.json"
+FILE_JOURNAL_PREFIX = "journal-"
+
+# Environment override for the developer identity, ahead of the .developer file.
+ENV_DEVELOPER = "TRELLIS_DEVELOPER"
+
+# Appended to every "no developer set" error so the two non-obvious sources are
+# discoverable from the failure itself.
+DEVELOPER_HINT = (
+    f"  Or set {ENV_DEVELOPER}=<your-name> in the environment.\n"
+    f"  A linked git worktree inherits {DIR_WORKFLOW}/{FILE_DEVELOPER} from its "
+    f"main checkout — run init_developer.py there to cover every worktree."
+)
+
+
+# =============================================================================
+# Repository Root
+# =============================================================================
+
+def get_repo_root(start_path: Path | None = None) -> Path:
+    """Find the nearest directory containing .trellis/ folder.
+
+    This handles nested git repos correctly (e.g., test project inside another repo).
+
+    Args:
+        start_path: Starting directory to search from. Defaults to current directory.
+
+    Returns:
+        Path to repository root, or current directory if no .trellis/ found.
+    """
+    current = (start_path or Path.cwd()).resolve()
+
+    while current != current.parent:
+        if (current / DIR_WORKFLOW).is_dir():
+            return current
+        current = current.parent
+
+    # Fallback to current directory if no .trellis/ found
+    return Path.cwd().resolve()
+
+
+# =============================================================================
+# Developer
+# =============================================================================
+
+def _read_developer_file(dev_file: Path) -> str | None:
+    """Read the `name=` field out of a .developer file, or None."""
+    if not dev_file.is_file():
+        return None
+
+    try:
+        content = dev_file.read_text(encoding="utf-8")
+    except (OSError, IOError):
+        return None
+
+    for line in content.splitlines():
+        if line.startswith("name="):
+            return line.split("=", 1)[1].strip() or None
+
+    return None
+
+
+def get_developer(repo_root: Path | None = None) -> str | None:
+    """Get the developer name for this checkout.
+
+    Resolution order, first hit wins (a CLI `--assignee` flag overrides all of
+    it, before this function is ever called):
+
+        1. The ``TRELLIS_DEVELOPER`` environment variable.
+        2. ``.trellis/.developer`` in this checkout.
+        3. ``.trellis/.developer`` in the main checkout, when this checkout is a
+           linked git worktree.
+
+    Step 3 exists because `.developer` is gitignored on purpose — it carries a
+    personal identity and no tracked file should. A fresh `git worktree add`
+    therefore starts with no identity file of its own, which used to make every
+    task.py command fail until init_developer.py was re-run per worktree. The
+    main checkout's file is read, never copied: a copy would go stale and shadow
+    later changes made in the main checkout.
+
+    Args:
+        repo_root: Repository root path. Defaults to auto-detected.
+
+    Returns:
+        Developer name or None if not initialized.
+    """
+    env_name = os.environ.get(ENV_DEVELOPER, "").strip()
+    if env_name:
+        return env_name
+
+    if repo_root is None:
+        repo_root = get_repo_root()
+
+    local = _read_developer_file(repo_root / DIR_WORKFLOW / FILE_DEVELOPER)
+    if local:
+        return local
+
+    main_root = main_worktree_root(repo_root)
+    if main_root is None:
+        return None
+
+    return _read_developer_file(main_root / DIR_WORKFLOW / FILE_DEVELOPER)
+
+
+def check_developer(repo_root: Path | None = None) -> bool:
+    """Check if developer is initialized.
+
+    Args:
+        repo_root: Repository root path. Defaults to auto-detected.
+
+    Returns:
+        True if developer is initialized.
+    """
+    return get_developer(repo_root) is not None
+
+
+# =============================================================================
+# Tasks Directory
+# =============================================================================
+
+def get_tasks_dir(repo_root: Path | None = None) -> Path:
+    """Get tasks directory path.
+
+    Args:
+        repo_root: Repository root path. Defaults to auto-detected.
+
+    Returns:
+        Path to tasks directory.
+    """
+    if repo_root is None:
+        repo_root = get_repo_root()
+    return repo_root / DIR_WORKFLOW / DIR_TASKS
+
+
+# =============================================================================
+# Workspace Directory
+# =============================================================================
+
+def get_workspace_dir(repo_root: Path | None = None) -> Path | None:
+    """Get developer workspace directory.
+
+    Args:
+        repo_root: Repository root path. Defaults to auto-detected.
+
+    Returns:
+        Path to workspace directory or None if developer not set.
+    """
+    if repo_root is None:
+        repo_root = get_repo_root()
+
+    developer = get_developer(repo_root)
+    if developer:
+        return repo_root / DIR_WORKFLOW / DIR_WORKSPACE / developer
+    return None
+
+
+# =============================================================================
+# Journal File
+# =============================================================================
+
+def get_active_journal_file(repo_root: Path | None = None) -> Path | None:
+    """Get the current active journal file.
+
+    Args:
+        repo_root: Repository root path. Defaults to auto-detected.
+
+    Returns:
+        Path to active journal file or None if not found.
+    """
+    if repo_root is None:
+        repo_root = get_repo_root()
+
+    workspace_dir = get_workspace_dir(repo_root)
+    if workspace_dir is None or not workspace_dir.is_dir():
+        return None
+
+    latest: Path | None = None
+    highest = 0
+
+    for f in workspace_dir.glob(f"{FILE_JOURNAL_PREFIX}*.md"):
+        if not f.is_file():
+            continue
+
+        # Extract number from filename
+        name = f.stem  # e.g., "journal-1"
+        match = re.search(r"(\d+)$", name)
+        if match:
+            num = int(match.group(1))
+            if num > highest:
+                highest = num
+                latest = f
+
+    return latest
+
+
+def count_lines(file_path: Path) -> int:
+    """Count lines in a file.
+
+    Args:
+        file_path: Path to file.
+
+    Returns:
+        Number of lines, or 0 if file doesn't exist.
+    """
+    if not file_path.is_file():
+        return 0
+
+    try:
+        return len(file_path.read_text(encoding="utf-8").splitlines())
+    except (OSError, IOError):
+        return 0
+
+
+# =============================================================================
+# Current Task Management
+# =============================================================================
+
+def normalize_task_ref(task_ref: str) -> str:
+    """Normalize a task ref for stable runtime storage.
+
+    Stored refs should prefer repo-relative POSIX paths like
+    `.trellis/tasks/03-27-my-task`, even on Windows. Absolute paths are preserved
+    unless they can later be converted back to repo-relative form by callers.
+    """
+    normalized = task_ref.strip()
+    if not normalized:
+        return ""
+
+    path_obj = Path(normalized)
+    if path_obj.is_absolute():
+        return str(path_obj)
+
+    normalized = normalized.replace("\\", "/")
+    while normalized.startswith("./"):
+        normalized = normalized[2:]
+
+    if normalized.startswith(f"{DIR_TASKS}/"):
+        return f"{DIR_WORKFLOW}/{normalized}"
+
+    return normalized
+
+
+def resolve_task_ref(task_ref: str, repo_root: Path | None = None) -> Path | None:
+    """Resolve a task ref to an absolute task directory path inside the repo.
+
+    Returns None when the ref resolves outside `repo_root`. Every reader of the
+    active task — `task.py`, the shared hooks, the platform extensions — comes
+    through here, so containment is enforced at this one point rather than at
+    each call site.
+
+    It matters because a ref is not always something the user typed. It round
+    trips through the session pointer under `.trellis/.runtime/sessions/`, and
+    `..` segments used to survive that trip intact: `_canonical_task_ref`
+    compares lexically, and a lexical `relative_to` accepts
+    `<root>/.trellis/tasks/../../../elsewhere` because the string does start
+    with the root. The ref was then stored verbatim and replayed on every later
+    turn, so `task.py start .trellis/tasks/../../../elsewhere` both rewrote that
+    directory's `task.json` and fed its files to the model.
+
+    Resolving here also normalises the path, so callers get a ref without `..`
+    to store.
+    """
+    if repo_root is None:
+        repo_root = get_repo_root()
+
+    normalized = normalize_task_ref(task_ref)
+    if not normalized:
+        return None
+
+    try:
+        root = repo_root.resolve()
+    except OSError:
+        return None
+
+    path_obj = Path(normalized)
+    if path_obj.is_absolute():
+        candidate = path_obj
+    elif normalized.startswith(f"{DIR_WORKFLOW}/"):
+        candidate = root / path_obj
+    else:
+        candidate = root / DIR_WORKFLOW / DIR_TASKS / path_obj
+
+    # resolve() collapses `..` and follows symlinks, so a task directory that
+    # links outside the repo is refused too. Both sides are resolved because
+    # repo_root itself may sit behind a symlink (/tmp on macOS does).
+    try:
+        resolved = candidate.resolve()
+        workflow_real = (root / DIR_WORKFLOW).resolve()
+    except OSError:
+        return None
+
+    try:
+        resolved.relative_to(root)
+        return resolved
+    except ValueError:
+        pass
+
+    # `.trellis` may itself be a symlink into a store outside the repo (#567).
+    # The workflow dir's own real location is then a second legitimate
+    # containment base: a ref through that link never left the workflow tree.
+    # A ref that escapes BOTH bases (traversal, absolute path elsewhere, a
+    # task dir symlinked out of the tree) is still refused.
+    try:
+        rel = resolved.relative_to(workflow_real)
+    except ValueError:
+        return None
+
+    # Map back to the in-repo (lexical) form so callers store the same
+    # repo-relative ref as in the non-symlinked layout.
+    return root / DIR_WORKFLOW / rel
+
+
+def get_current_task(
+    repo_root: Path | None = None,
+    platform_input: dict | None = None,
+    platform: str | None = None,
+) -> str | None:
+    """Get current task directory path (relative to repo_root).
+
+    Args:
+        repo_root: Repository root path. Defaults to auto-detected.
+
+    Returns:
+        Relative path to current task directory or None.
+    """
+    if repo_root is None:
+        repo_root = get_repo_root()
+
+    from .active_task import resolve_active_task
+
+    return resolve_active_task(repo_root, platform_input, platform).task_path
+
+
+def get_current_task_abs(
+    repo_root: Path | None = None,
+    platform_input: dict | None = None,
+    platform: str | None = None,
+) -> Path | None:
+    """Get current task directory absolute path.
+
+    Args:
+        repo_root: Repository root path. Defaults to auto-detected.
+
+    Returns:
+        Absolute path to current task directory or None.
+    """
+    if repo_root is None:
+        repo_root = get_repo_root()
+
+    relative = get_current_task(repo_root, platform_input, platform)
+    if relative:
+        return resolve_task_ref(relative, repo_root)
+    return None
+
+
+def get_current_task_source(
+    repo_root: Path | None = None,
+    platform_input: dict | None = None,
+    platform: str | None = None,
+) -> tuple[str, str | None, str | None]:
+    """Get active task source as (`source`, `context_key`, `task_path`)."""
+    if repo_root is None:
+        repo_root = get_repo_root()
+
+    from .active_task import get_current_task_source as _get_source
+
+    return _get_source(repo_root, platform_input, platform)
+
+
+def set_current_task(
+    task_path: str,
+    repo_root: Path | None = None,
+    platform_input: dict | None = None,
+    platform: str | None = None,
+) -> bool:
+    """Set current task in session scope.
+
+    Args:
+        task_path: Task directory path (relative to repo_root).
+        repo_root: Repository root path. Defaults to auto-detected.
+
+    Returns:
+        True on success, False on error.
+    """
+    if repo_root is None:
+        repo_root = get_repo_root()
+
+    from .active_task import set_active_task
+
+    return set_active_task(
+        task_path,
+        repo_root,
+        platform_input=platform_input,
+        platform=platform,
+    ) is not None
+
+
+def clear_current_task(
+    repo_root: Path | None = None,
+    platform_input: dict | None = None,
+    platform: str | None = None,
+) -> bool:
+    """Clear current task in session scope.
+
+    Args:
+        repo_root: Repository root path. Defaults to auto-detected.
+
+    Returns:
+        True on success.
+    """
+    if repo_root is None:
+        repo_root = get_repo_root()
+
+    from .active_task import clear_active_task
+
+    clear_active_task(
+        repo_root,
+        platform_input=platform_input,
+        platform=platform,
+    )
+    return True
+
+
+def has_current_task(repo_root: Path | None = None) -> bool:
+    """Check if has current task.
+
+    Args:
+        repo_root: Repository root path. Defaults to auto-detected.
+
+    Returns:
+        True if current task is set.
+    """
+    return get_current_task(repo_root) is not None
+
+
+# =============================================================================
+# Task ID Generation
+# =============================================================================
+
+def generate_task_date_prefix() -> str:
+    """Generate task ID based on date (MM-DD format).
+
+    Returns:
+        Date prefix string (e.g., "01-21").
+    """
+    return datetime.now().strftime("%m-%d")
+
+
+# =============================================================================
+# Monorepo / Package Paths
+# =============================================================================
+
+
+def get_spec_dir(package: str | None = None, repo_root: Path | None = None) -> Path:
+    """Get the spec directory path.
+
+    Single-repo: .trellis/spec
+    Monorepo with package: .trellis/spec/<package>
+
+    Uses lazy import to avoid circular dependency with config.py.
+    """
+    if repo_root is None:
+        repo_root = get_repo_root()
+
+    from .config import get_spec_base
+
+    base = get_spec_base(package, repo_root)
+    return repo_root / DIR_WORKFLOW / base
+
+
+def get_package_path(package: str, repo_root: Path | None = None) -> Path | None:
+    """Get a package's source directory absolute path from config.
+
+    Returns:
+        Absolute path to the package directory, or None if not found.
+    """
+    if repo_root is None:
+        repo_root = get_repo_root()
+
+    from .config import get_packages
+
+    packages = get_packages(repo_root)
+    if not packages or package not in packages:
+        return None
+
+    info = packages[package]
+    if isinstance(info, dict):
+        rel_path = info.get("path", package)
+    else:
+        rel_path = str(info)
+
+    return repo_root / rel_path
+
+
+# =============================================================================
+# Main Entry (for testing)
+# =============================================================================
+
+if __name__ == "__main__":
+    repo = get_repo_root()
+    print(f"Repository root: {repo}")
+    print(f"Developer: {get_developer(repo)}")
+    print(f"Tasks dir: {get_tasks_dir(repo)}")
+    print(f"Workspace dir: {get_workspace_dir(repo)}")
+    print(f"Journal file: {get_active_journal_file(repo)}")
+    print(f"Current task: {get_current_task(repo)}")