docs: add Trellis planning and project specs

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2026-07-01 06:27:55 -07:00
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#!/usr/bin/env python3
"""Trellis per-turn breadcrumb hook (UserPromptSubmit / BeforeAgent equivalent).
Runs on every user prompt. Resolves the active task through Trellis'
session-aware active task resolver and emits a short <workflow-state>
block reminding the main AI what task is active and its expected flow.
The emitted ``hookEventName`` field is platform-aware: most hosts expect
``UserPromptSubmit`` (Claude Code naming, also accepted by Cursor / Qoder /
CodeBuddy / Droid / Codex / Copilot wiring), but Gemini CLI 0.40.x renamed
its per-turn event to ``BeforeAgent`` and its schema validator rejects the
legacy name. ``_detect_platform`` picks the right value at runtime.
Breadcrumb text is pulled exclusively from workflow.md
[workflow-state:STATUS] tag blocks — workflow.md is the single source of
truth. There are no fallback dicts in this script: when workflow.md is
missing or a tag is absent, the breadcrumb degrades to a generic
"Refer to workflow.md for current step." line so users see (and fix)
the broken state instead of the hook silently masking it.
Shared across all hook-capable platforms (Claude, Cursor, Codex, Qoder,
CodeBuddy, Droid, Gemini, Copilot, Kiro). Kiro wires this via the CLI
custom agent's ``hooks.userPromptSubmit`` and the IDE ``.kiro.hook``
``promptSubmit`` event; its output branch emits a plain-text breadcrumb
(Kiro adds hook stdout directly to the conversation context). Written to
each platform's hooks directory via writeSharedHooks() at init time.
Silent exit 0 cases (no output):
- No .trellis/ directory found (not a Trellis project)
- task.json malformed or missing status
"""
from __future__ import annotations
import json
import os
import re
import sys
import queue
import threading
from pathlib import Path
# Force UTF-8 on stdin/stdout/stderr on Windows. Default codepage there is
# cp936 / cp1252 / etc. — non-ASCII content (Chinese task names, prd snippets)
# both in stdin (hook payload from host CLI) and stdout (our emitted blocks)
# raises UnicodeDecodeError / UnicodeEncodeError. Equivalent to `python -X utf8`
# but applied per-stream so we don't depend on host CLI's command wiring.
if sys.platform.startswith("win"):
import io as _io
for _stream_name in ("stdin", "stdout", "stderr"):
_stream = getattr(sys, _stream_name, None)
if _stream is None:
continue
if hasattr(_stream, "reconfigure"):
try:
_stream.reconfigure(encoding="utf-8", errors="replace") # type: ignore[union-attr]
except Exception:
pass
elif hasattr(_stream, "detach"):
try:
setattr(sys, _stream_name, _io.TextIOWrapper(_stream.detach(), encoding="utf-8", errors="replace"))
except Exception:
pass
from typing import Optional
# Bootstrap notice for Codex while the session has no active task. Codex does not
# get the full SessionStart overview; this short reminder points the main session
# at the start skill once and leaves the per-turn state block compact.
CODEX_NO_TASK_BOOTSTRAP_NOTICE = """<trellis-bootstrap>
If you have not already loaded Trellis context this session, read the `trellis-start` skill once.
</trellis-bootstrap>"""
# ---------------------------------------------------------------------------
# CWD-robust Trellis root discovery (fixes hook-path-robustness for this hook)
# ---------------------------------------------------------------------------
def find_trellis_root(start: Path) -> Optional[Path]:
"""Walk up from start to find directory containing .trellis/.
Handles CWD drift: subdirectory launches, monorepo packages, etc.
Returns None if no .trellis/ found (silent no-op).
"""
cur = start.resolve()
while cur != cur.parent:
if (cur / ".trellis").is_dir():
return cur
cur = cur.parent
return None
# ---------------------------------------------------------------------------
# Active task discovery
# ---------------------------------------------------------------------------
def _detect_platform(input_data: dict) -> str | None:
if isinstance(input_data.get("cursor_version"), str):
return "cursor"
env_map = {
"CLAUDE_PROJECT_DIR": "claude",
"CURSOR_PROJECT_DIR": "cursor",
"CODEBUDDY_PROJECT_DIR": "codebuddy",
"FACTORY_PROJECT_DIR": "droid",
"GEMINI_PROJECT_DIR": "gemini",
"QODER_PROJECT_DIR": "qoder",
"KIRO_PROJECT_DIR": "kiro",
"COPILOT_PROJECT_DIR": "copilot",
"TRAE_PROJECT_DIR": "trae",
}
for env_name, platform in env_map.items():
if os.environ.get(env_name):
return platform
script_parts = set(Path(sys.argv[0]).parts)
if ".claude" in script_parts:
return "claude"
if ".cursor" in script_parts:
return "cursor"
if ".codex" in script_parts:
return "codex"
if ".gemini" in script_parts:
return "gemini"
if ".qoder" in script_parts:
return "qoder"
if ".codebuddy" in script_parts:
return "codebuddy"
if ".factory" in script_parts:
return "droid"
if ".kiro" in script_parts:
return "kiro"
if ".trae" in script_parts:
return "trae"
return None
def _resolve_active_task(root: Path, input_data: dict):
scripts_dir = root / ".trellis" / "scripts"
if str(scripts_dir) not in sys.path:
sys.path.insert(0, str(scripts_dir))
from common.active_task import resolve_active_task # type: ignore[import-not-found]
return resolve_active_task(root, input_data, platform=_detect_platform(input_data))
def get_active_task(root: Path, input_data: dict) -> Optional[tuple[str, str, str]]:
"""Return (task_id, status, source) from the current active task."""
active = _resolve_active_task(root, input_data)
if not active.task_path:
return None
task_dir = Path(active.task_path)
if not task_dir.is_absolute():
task_dir = root / task_dir
if active.stale:
return task_dir.name, f"stale_{active.source_type}", active.source
task_json = task_dir / "task.json"
if not task_json.is_file():
return None
try:
data = json.loads(task_json.read_text(encoding="utf-8"))
except (json.JSONDecodeError, OSError):
return None
task_id = data.get("id") or task_dir.name
status = data.get("status", "")
if not isinstance(status, str) or not status:
return None
return task_id, status, active.source
# ---------------------------------------------------------------------------
# Breadcrumb loading: parse workflow.md, fall back to hardcoded defaults
# ---------------------------------------------------------------------------
# Supports STATUS values with letters, digits, underscores, hyphens
# (so "in-review" / "blocked-by-team" work alongside "in_progress").
_TAG_RE = re.compile(
r"\[workflow-state:([A-Za-z0-9_-]+)\]\s*\n(.*?)\n\s*\[/workflow-state:\1\]",
re.DOTALL,
)
def load_breadcrumbs(root: Path) -> dict[str, str]:
"""Parse workflow.md for [workflow-state:STATUS] blocks.
Returns {status: body_text}. workflow.md is the single source of
truth — there are no fallback dicts in this script. Missing tags
(or a missing/unreadable workflow.md) fall back to a generic line
in build_breadcrumb so users see the broken state and fix
workflow.md, rather than the hook silently masking the issue.
"""
workflow = root / ".trellis" / "workflow.md"
if not workflow.is_file():
return {}
try:
content = workflow.read_text(encoding="utf-8")
except OSError:
return {}
result: dict[str, str] = {}
for match in _TAG_RE.finditer(content):
status = match.group(1)
body = match.group(2).strip()
if body:
result[status] = body
return result
def _read_trellis_config(root: Path) -> dict:
"""Load .trellis/config.yaml via the bundled trellis_config helper.
The helper lives in .trellis/scripts/common; the hook lives outside the
scripts tree, so we extend sys.path before importing.
"""
scripts_dir = root / ".trellis" / "scripts"
if str(scripts_dir) not in sys.path:
sys.path.insert(0, str(scripts_dir))
try:
from common.trellis_config import read_trellis_config # type: ignore[import-not-found]
except Exception:
return {}
try:
return read_trellis_config(root)
except Exception:
return {}
def _codex_mode_banner(config: dict) -> str:
"""Emit a `<codex-mode>` banner for the additionalContext payload.
Reads `codex.dispatch_mode` from .trellis/config.yaml; defaults to
`inline` when missing or invalid because Codex sub-agents run with
`fork_turns="none"` isolation and can't inherit the parent session's
task context. The banner makes the active mode explicit to Codex AI
per turn, complementing the workflow-state body which is per-status.
Mode tells AI which dispatch protocol to follow; workflow-state tells
AI what step it's at.
"""
mode = "inline"
if isinstance(config, dict):
codex_cfg = config.get("codex")
if isinstance(codex_cfg, dict):
cfg_mode = codex_cfg.get("dispatch_mode")
if cfg_mode in ("inline", "sub-agent"):
mode = cfg_mode
if mode == "sub-agent":
meaning = (
"sub-agent: implement/check work defaults to Trellis sub-agents; "
"the main session still coordinates, clarifies, updates specs, commits, and finishes."
)
else:
meaning = (
"inline: the main session implements/checks directly; "
"do not dispatch implement/check sub-agents."
)
return f"<codex-mode>{meaning}</codex-mode>"
def resolve_breadcrumb_key(
status: str, platform: str | None, config: dict
) -> str:
"""Pick the breadcrumb tag key based on Codex dispatch_mode.
Codex defaults to ``inline`` because sub-agents run with ``fork_turns="none"``
isolation and can't inherit the parent session's task context. Users can
opt into ``codex.dispatch_mode: sub-agent`` in ``.trellis/config.yaml``
to use the parallel ``<status>-inline`` tag → ``<status>`` flip. Invalid
or missing values fall back to inline.
Non-codex platforms return the plain status unchanged.
"""
if platform == "codex":
mode = "inline"
if isinstance(config, dict):
codex_cfg = config.get("codex")
if isinstance(codex_cfg, dict):
cfg_mode = codex_cfg.get("dispatch_mode")
if cfg_mode in ("inline", "sub-agent"):
mode = cfg_mode
return f"{status}-inline" if mode == "inline" else status
return status
def build_breadcrumb(
task_id: Optional[str],
status: str,
templates: dict[str, str],
source: str | None = None,
breadcrumb_key: str | None = None,
) -> str:
"""Build the <workflow-state>...</workflow-state> block.
- Known status (tag present in workflow.md) → detailed template body
- Unknown status (no tag, or workflow.md missing) → generic
"Refer to workflow.md for current step." line
- `no_task` pseudo-status (task_id is None) → header omits task info
"""
lookup_key = breadcrumb_key or status
body = templates.get(lookup_key)
if body is None and lookup_key != status:
body = templates.get(status)
if body is None:
body = "Refer to workflow.md for current step."
header = f"Status: {status}" if task_id is None else f"Task: {task_id} ({status})"
return f"<workflow-state>\n{header}\n{body}\n</workflow-state>"
# ---------------------------------------------------------------------------
# Entry
# ---------------------------------------------------------------------------
def _load_hook_input() -> dict:
"""Read hook JSON without trusting host runners to close stdin.
Kiro IDE `runCommand` and similar hook runners can leave stdin open while
sending no payload. A plain `json.load(sys.stdin)` then blocks forever.
Normal hook runners write the complete JSON payload and close stdin, so the
short daemon read preserves that path while failing closed to `{}` for
non-piping hosts.
"""
result_queue: "queue.Queue[str | BaseException]" = queue.Queue(maxsize=1)
def _read() -> None:
try:
result_queue.put(sys.stdin.read())
except BaseException as exc:
result_queue.put(exc)
reader = threading.Thread(target=_read, daemon=True)
reader.start()
try:
raw = result_queue.get(timeout=0.2)
except queue.Empty:
return {}
if isinstance(raw, BaseException):
return {}
try:
data = json.loads(raw) if raw.strip() else {}
except (json.JSONDecodeError, ValueError):
return {}
return data if isinstance(data, dict) else {}
def main() -> int:
if os.environ.get("TRELLIS_HOOKS") == "0" or os.environ.get("TRELLIS_DISABLE_HOOKS") == "1":
return 0
data = _load_hook_input()
cwd_str = data.get("cwd") or os.getcwd()
cwd = Path(cwd_str)
root = find_trellis_root(cwd)
if root is None:
return 0 # not a Trellis project
templates = load_breadcrumbs(root)
platform = _detect_platform(data)
config = _read_trellis_config(root)
task = get_active_task(root, data)
if task is None:
# No active task — still emit a breadcrumb nudging AI toward
# trellis-brainstorm + task.py create when user describes real work.
no_task_key = resolve_breadcrumb_key("no_task", platform, config)
breadcrumb = build_breadcrumb(
None, "no_task", templates, breadcrumb_key=no_task_key
)
else:
task_id, status, source = task
status_key = resolve_breadcrumb_key(status, platform, config)
source_for_breadcrumb = None if platform == "codex" else source
breadcrumb = build_breadcrumb(
task_id, status, templates, source_for_breadcrumb, breadcrumb_key=status_key
)
if platform == "codex":
parts: list[str] = []
if task is None:
parts.append(CODEX_NO_TASK_BOOTSTRAP_NOTICE)
parts.append(_codex_mode_banner(config))
parts.append(breadcrumb)
breadcrumb = "\n\n".join(parts)
# Kiro (CLI userPromptSubmit / IDE promptSubmit) adds a hook's stdout
# directly to the conversation context — no JSON envelope. Emit the bare
# breadcrumb text. Conditionally isolated: all other platforms keep the
# hookSpecificOutput JSON path below unchanged.
if platform == "kiro":
print(breadcrumb)
return 0
# Gemini CLI 0.40.x rejects "UserPromptSubmit" — its per-turn event is
# named "BeforeAgent". Other platforms (Claude/Cursor/Qoder/CodeBuddy/
# Droid/Codex/Copilot) accept the original Claude-style name.
hook_event_name = (
"BeforeAgent" if platform == "gemini" else "UserPromptSubmit"
)
output = {
"hookSpecificOutput": {
"hookEventName": hook_event_name,
"additionalContext": breadcrumb,
}
}
print(json.dumps(output))
return 0
if __name__ == "__main__":
sys.exit(main())

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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Codex Session Start Hook - Inject Trellis context into Codex sessions.
Output format follows Codex hook protocol:
stdout JSON → { hookSpecificOutput: { hookEventName: "SessionStart", additionalContext: "..." } }
"""
from __future__ import annotations
import json
import os
import re
import subprocess
import sys
import warnings
from io import StringIO
from pathlib import Path
# Force UTF-8 on stdin/stdout/stderr on Windows. Default codepage there is
# cp936 / cp1252 / etc. — non-ASCII content (Chinese task names, prd snippets)
# both in stdin (hook payload from host CLI) and stdout (our emitted blocks)
# raises UnicodeDecodeError / UnicodeEncodeError. Equivalent to `python -X utf8`
# but applied per-stream so we don't depend on host CLI's command wiring.
if sys.platform.startswith("win"):
import io as _io
for _stream_name in ("stdin", "stdout", "stderr"):
_stream = getattr(sys, _stream_name, None)
if _stream is None:
continue
if hasattr(_stream, "reconfigure"):
try:
_stream.reconfigure(encoding="utf-8", errors="replace") # type: ignore[union-attr]
except Exception:
pass
elif hasattr(_stream, "detach"):
try:
setattr(sys, _stream_name, _io.TextIOWrapper(_stream.detach(), encoding="utf-8", errors="replace"))
except Exception:
pass
def _normalize_windows_shell_path(path_str: str) -> str:
"""Normalize Unix-style shell paths to real Windows paths.
On Windows, shells like Git Bash / MSYS2 / Cygwin may report paths like
`/d/Users/...` or `/cygdrive/d/Users/...`. `Path.resolve()` will misinterpret
these as `D:/d/Users...` on drive D: (or similar), breaking repo root
detection.
This function is intentionally conservative: it only rewrites patterns that
unambiguously represent a drive letter mount.
"""
if not isinstance(path_str, str) or not path_str:
return path_str
# Only relevant on Windows; keep other platforms untouched.
if not sys.platform.startswith("win"):
return path_str
p = path_str.strip()
# Already a Windows drive path (C:\... or C:/...)
if re.match(r"^[A-Za-z]:[\/]", p):
return p
# MSYS/Git-Bash style: /c/Users/... or /d/Work/...
m = re.match(r"^/([A-Za-z])/(.*)", p)
if m:
drive, rest = m.group(1).upper(), m.group(2)
rest = rest.replace('/', '\\')
return f"{drive}:\\{rest}"
# Cygwin style: /cygdrive/c/Users/...
m = re.match(r"^/cygdrive/([A-Za-z])/(.*)", p)
if m:
drive, rest = m.group(1).upper(), m.group(2)
rest = rest.replace('/', '\\')
return f"{drive}:\\{rest}"
# WSL mounted drive (sometimes leaked into env): /mnt/c/Users/...
m = re.match(r"^/mnt/([A-Za-z])/(.*)", p)
if m:
drive, rest = m.group(1).upper(), m.group(2)
rest = rest.replace('/', '\\')
return f"{drive}:\\{rest}"
return path_str
warnings.filterwarnings("ignore")
FIRST_REPLY_NOTICE = """<first-reply-notice>
On the first visible assistant reply in this session, begin with exactly one short Chinese sentence:
Trellis SessionStart 已注入workflow、当前任务状态、开发者身份、git 状态、active tasks、spec 索引已加载。
Then continue directly with the user's request. This notice is one-shot: do not repeat it after the first assistant reply in the same session.
</first-reply-notice>"""
def should_skip_injection() -> bool:
if os.environ.get("TRELLIS_HOOKS") == "0":
return True
if os.environ.get("TRELLIS_DISABLE_HOOKS") == "1":
return True
return os.environ.get("CODEX_NON_INTERACTIVE") == "1"
def configure_project_encoding(project_dir: Path) -> None:
"""Reuse Trellis' shared Windows stdio encoding helper before JSON output."""
scripts_dir = project_dir / ".trellis" / "scripts"
if str(scripts_dir) not in sys.path:
sys.path.insert(0, str(scripts_dir))
try:
from common import configure_encoding # type: ignore[import-not-found]
configure_encoding()
except Exception:
pass
def _has_curated_jsonl_entry(jsonl_path: Path) -> bool:
"""Return True iff jsonl has at least one row with a ``file`` field.
A freshly seeded jsonl only contains a ``{"_example": ...}`` row (no
``file`` key) — that is NOT "ready". Readiness requires at least one
curated entry. Matches the contract used by ``inject-subagent-context.py``.
"""
try:
for line in jsonl_path.read_text(encoding="utf-8").splitlines():
line = line.strip()
if not line:
continue
try:
row = json.loads(line)
except json.JSONDecodeError:
continue
if isinstance(row, dict) and row.get("file"):
return True
except (OSError, UnicodeDecodeError):
return False
return False
def read_file(path: Path, fallback: str = "") -> str:
try:
return path.read_text(encoding="utf-8")
except (FileNotFoundError, PermissionError):
return fallback
def _resolve_context_key(project_dir: Path, hook_input: dict) -> str | None:
scripts_dir = project_dir / ".trellis" / "scripts"
if str(scripts_dir) not in sys.path:
sys.path.insert(0, str(scripts_dir))
try:
from common.active_task import resolve_context_key # type: ignore[import-not-found]
except Exception:
return None
return resolve_context_key(hook_input, platform="codex")
def _resolve_active_task(trellis_dir: Path, hook_input: dict):
scripts_dir = trellis_dir / "scripts"
if str(scripts_dir) not in sys.path:
sys.path.insert(0, str(scripts_dir))
from common.active_task import resolve_active_task # type: ignore[import-not-found]
return resolve_active_task(trellis_dir.parent, hook_input, platform="codex")
def run_script(script_path: Path, context_key: str | None = None) -> str:
try:
env = os.environ.copy()
env["PYTHONIOENCODING"] = "utf-8"
if context_key:
env["TRELLIS_CONTEXT_ID"] = context_key
cmd = [sys.executable, "-W", "ignore", str(script_path)]
result = subprocess.run(
cmd,
capture_output=True,
text=True,
encoding="utf-8",
errors="replace",
timeout=5,
cwd=str(script_path.parent.parent.parent),
env=env,
)
return result.stdout if result.returncode == 0 else "No context available"
except (subprocess.TimeoutExpired, FileNotFoundError, PermissionError):
return "No context available"
def _normalize_task_ref(task_ref: str) -> str:
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("tasks/"):
return f".trellis/{normalized}"
return normalized
def _resolve_task_dir(trellis_dir: Path, task_ref: str) -> Path:
normalized = _normalize_task_ref(task_ref)
path_obj = Path(normalized)
if path_obj.is_absolute():
return path_obj
if normalized.startswith(".trellis/"):
return trellis_dir.parent / path_obj
return trellis_dir / "tasks" / path_obj
def _get_task_status(trellis_dir: Path, hook_input: dict) -> str:
active = _resolve_active_task(trellis_dir, hook_input)
if not active.task_path:
return (
"Status: NO ACTIVE TASK\n"
"Next: Classify the current turn and ask for task-creation consent "
"before creating any Trellis task."
)
task_ref = active.task_path
task_dir = _resolve_task_dir(trellis_dir, task_ref)
if active.stale or not task_dir.is_dir():
return (
f"Status: STALE POINTER\nTask: {task_ref}\n"
"Next: Task directory not found. Run: python3 ./.trellis/scripts/task.py finish"
)
task_json_path = task_dir / "task.json"
task_data: dict = {}
if task_json_path.is_file():
try:
task_data = json.loads(task_json_path.read_text(encoding="utf-8"))
except (json.JSONDecodeError, PermissionError):
pass
task_title = task_data.get("title", task_ref)
task_status = task_data.get("status", "unknown")
if task_status == "completed":
return (
f"Status: COMPLETED\nTask: {task_title}\n"
f"Next: Archive with `python3 ./.trellis/scripts/task.py archive {task_dir.name}` "
"or start a new task."
)
has_prd = (task_dir / "prd.md").is_file()
has_design = (task_dir / "design.md").is_file()
has_implement = (task_dir / "implement.md").is_file()
present = [
name
for name in ("prd.md", "design.md", "implement.md", "implement.jsonl", "check.jsonl")
if (task_dir / name).is_file()
]
present_line = ", ".join(present) if present else "none"
if not has_prd:
return (
f"Status: PLANNING\nTask: {task_title}\nPresent: {present_line}\n"
"Next: Load trellis-brainstorm and write prd.md. Stay in planning."
)
if task_status == "planning":
if has_design and has_implement:
next_action = "Review planning artifacts with the user before `task.py start`."
else:
next_action = (
"Lightweight task can ask for start review with PRD-only; "
"complex task must add design.md and implement.md before `task.py start`."
)
return (
f"Status: PLANNING\nTask: {task_title}\nPresent: {present_line}\n"
f"Next: {next_action}"
)
return (
f"Status: {task_status.upper()}\nTask: {task_title}\nPresent: {present_line}\n"
"Next: Follow the matching per-turn workflow-state. Context order is jsonl entries, "
"prd.md, design.md if present, implement.md if present."
)
def _run_git(repo_root: Path, args: list[str]) -> str:
try:
result = subprocess.run(
["git", *args],
capture_output=True,
text=True,
encoding="utf-8",
errors="replace",
timeout=3,
cwd=str(repo_root),
)
except (subprocess.TimeoutExpired, FileNotFoundError, PermissionError):
return ""
if result.returncode != 0:
return ""
return result.stdout.strip()
def _format_git_state(repo_root: Path) -> str:
branch = _run_git(repo_root, ["branch", "--show-current"]) or "(detached)"
dirty_lines = [
line for line in _run_git(repo_root, ["status", "--porcelain"]).splitlines()
if line.strip()
]
dirty_text = "clean" if not dirty_lines else f"dirty {len(dirty_lines)} paths"
return f"Git: branch {branch}; {dirty_text}."
def _repo_relative(repo_root: Path, path: Path) -> str:
try:
return path.relative_to(repo_root).as_posix()
except ValueError:
return str(path)
def _collect_spec_index_paths(trellis_dir: Path) -> list[str]:
paths: list[str] = []
guides_index = trellis_dir / "spec" / "guides" / "index.md"
if guides_index.is_file():
paths.append(".trellis/spec/guides/index.md")
spec_dir = trellis_dir / "spec"
if not spec_dir.is_dir():
return paths
for sub in sorted(spec_dir.iterdir()):
if not sub.is_dir() or sub.name.startswith(".") or sub.name == "guides":
continue
index_file = sub / "index.md"
if index_file.is_file():
paths.append(f".trellis/spec/{sub.name}/index.md")
continue
for nested in sorted(sub.iterdir()):
if not nested.is_dir():
continue
nested_index = nested / "index.md"
if nested_index.is_file():
paths.append(f".trellis/spec/{sub.name}/{nested.name}/index.md")
return paths
def _build_compact_current_state(
trellis_dir: Path,
hook_input: dict,
spec_index_paths: list[str],
) -> str:
repo_root = trellis_dir.parent
lines: list[str] = []
try:
from common.paths import get_active_journal_file, get_developer, get_tasks_dir, count_lines # type: ignore[import-not-found]
from common.tasks import iter_active_tasks # type: ignore[import-not-found]
except Exception:
get_active_journal_file = None # type: ignore[assignment]
get_developer = None # type: ignore[assignment]
get_tasks_dir = None # type: ignore[assignment]
count_lines = None # type: ignore[assignment]
iter_active_tasks = None # type: ignore[assignment]
developer = get_developer(repo_root) if get_developer else None
lines.append(f"Developer: {developer or '(not initialized)'}")
lines.append(_format_git_state(repo_root))
active = _resolve_active_task(trellis_dir, hook_input)
if active.task_path:
task_dir = _resolve_task_dir(trellis_dir, active.task_path)
status = "unknown"
task_json = task_dir / "task.json"
if task_json.is_file():
try:
data = json.loads(task_json.read_text(encoding="utf-8"))
if isinstance(data, dict):
status = str(data.get("status") or "unknown")
except (json.JSONDecodeError, OSError):
pass
lines.append(f"Current task: {_repo_relative(repo_root, task_dir)}; status={status}.")
else:
lines.append("Current task: none.")
if get_tasks_dir and iter_active_tasks:
try:
task_count = sum(1 for _ in iter_active_tasks(get_tasks_dir(repo_root)))
lines.append(
f"Active tasks: {task_count} total. Use `python3 ./.trellis/scripts/task.py list --mine` only if needed."
)
except Exception:
pass
if get_active_journal_file and count_lines:
journal = get_active_journal_file(repo_root)
if journal:
lines.append(
f"Journal: {_repo_relative(repo_root, journal)}, {count_lines(journal)} / 2000 lines."
)
if spec_index_paths:
lines.append(f"Spec indexes: {len(spec_index_paths)} available.")
return "\n".join(lines)
def _extract_range(content: str, start_header: str, end_header: str) -> str:
"""Extract lines starting at `## start_header` up to (but excluding) `## end_header`."""
lines = content.splitlines()
start: "int | None" = None
end: int = len(lines)
start_match = f"## {start_header}"
end_match = f"## {end_header}"
for i, line in enumerate(lines):
stripped = line.strip()
if start is None and stripped == start_match:
start = i
continue
if start is not None and stripped == end_match:
end = i
break
if start is None:
return ""
return "\n".join(lines[start:end]).rstrip()
_BREADCRUMB_TAG_RE = re.compile(
r"\[workflow-state:([A-Za-z0-9_-]+)\]\s*\n.*?\n\s*\[/workflow-state:\1\]",
re.DOTALL,
)
def _strip_breadcrumb_tag_blocks(content: str) -> str:
stripped = _BREADCRUMB_TAG_RE.sub("", content)
stripped = re.sub(r"<!--.*?-->", "", stripped, flags=re.DOTALL)
stripped = re.sub(r"^\[(?!/?workflow-state:)/?[^\]\n]+\]\s*\n?", "", stripped, flags=re.MULTILINE)
return re.sub(r"\n{3,}", "\n\n", stripped).strip()
def _build_workflow_toc(workflow_path: Path) -> str:
"""Inject only the compact Phase Index summary for SessionStart."""
content = read_file(workflow_path)
if not content:
return "No workflow.md found"
out_lines = [
"# Development Workflow - Session Summary",
"Full guide: .trellis/workflow.md. Step detail: `python3 ./.trellis/scripts/get_context.py --mode phase --step <X.Y>`.",
"",
]
phases = _extract_range(content, "Phase Index", "Phase 1: Plan")
if phases:
out_lines.append(_strip_breadcrumb_tag_blocks(phases).rstrip())
return "\n".join(out_lines).rstrip()
def main() -> None:
if should_skip_injection():
sys.exit(0)
# Read hook input from stdin
try:
hook_input = json.loads(sys.stdin.read())
if not isinstance(hook_input, dict):
hook_input = {}
project_dir = Path(_normalize_windows_shell_path(hook_input.get("cwd", "."))).resolve()
except (json.JSONDecodeError, KeyError):
hook_input = {}
project_dir = Path(".").resolve()
configure_project_encoding(project_dir)
trellis_dir = project_dir / ".trellis"
spec_index_paths = _collect_spec_index_paths(trellis_dir)
output = StringIO()
output.write("""<session-context>
Trellis compact SessionStart context. Use it to orient the session; load details on demand.
</session-context>
""")
output.write(FIRST_REPLY_NOTICE)
output.write("\n\n")
output.write("<current-state>\n")
output.write(_build_compact_current_state(trellis_dir, hook_input, spec_index_paths))
output.write("\n</current-state>\n\n")
output.write("<trellis-workflow>\n")
output.write(_build_workflow_toc(trellis_dir / "workflow.md"))
output.write("\n</trellis-workflow>\n\n")
output.write("<guidelines>\n")
output.write(
"Task context order for implementation/check: jsonl entries -> `prd.md` -> "
"`design.md if present` -> `implement.md if present`. Missing optional artifacts "
"are skipped for lightweight tasks.\n\n"
)
if spec_index_paths:
output.write("## Available indexes (read on demand)\n")
for p in spec_index_paths:
output.write(f"- {p}\n")
output.write("\n")
output.write(
"Discover more via: "
"`python3 ./.trellis/scripts/get_context.py --mode packages`\n"
)
output.write("</guidelines>\n\n")
task_status = _get_task_status(trellis_dir, hook_input)
output.write(f"<task-status>\n{task_status}\n</task-status>\n\n")
output.write("""<ready>
Context loaded. Follow <task-status>. Load workflow/spec/task details only when needed.
</ready>""")
context = output.getvalue()
result = {
"suppressOutput": True,
"systemMessage": f"Trellis context injected ({len(context)} chars)",
"hookSpecificOutput": {
"hookEventName": "SessionStart",
"additionalContext": context,
},
}
print(json.dumps(result, ensure_ascii=False), flush=True)
if __name__ == "__main__":
main()