chore: 升级 Trellis 并精简规则（09-05-trellis-upgrade-rule-cleanup）

.trellis/config.yaml

@@ -58,34 +58,23 @@ session_auto_commit: false
 # Trellis auto-detects workspaces during `trellis init`, but you can also
 # configure them manually here.
 #
-# hyb-oa uses Trellis single-repo mode in this first migration. Domain specs
-# live as layers under .trellis/spec/ and point to server/, client/, and docs/.
 # packages:
-#   backend:
-#     path: server
 #   frontend:
-#     path: client
+#     path: packages/frontend
+#   backend:
+#     path: packages/backend
 #   docs:
-#     path: docs
+#     path: docs-site
+#     type: submodule
+#   # For polyrepo / meta-repo layouts (independent .git in each subdir),
+#   # mark the package with `git: true`. The runtime treats it as an
+#   # independent repository for things like git-context display.
+#   webapp:
+#     path: ./webapp
+#     git: true
 
 # Default package used when --package is not specified.
-# default_package: backend
-
-#-------------------------------------------------------------------------------
-# Codex (dispatch behavior)
-#-------------------------------------------------------------------------------
-# Codex-only knob; other platforms ignore it. Trellis 0.6.12 supports native
-# sub-agent context injection and recovery of truncated hook output, but hyb-oa
-# deliberately keeps the main session in charge unless a task explicitly
-# approves sub-agent work. "sub-agent" remains a backwards-compatible alias
-# for "auto"; invalid explicit values safely use inline mode.
-#
-# In "auto" mode, sub-agents inherit the main session model unless their
-# generated `.codex/agents/trellis-*.toml` file pins a model. There is no
-# config.yaml model override.
-#
-codex:
-  dispatch_mode: inline  # keep Codex main-session edits until a task explicitly asks for sub-agents
+# default_package: frontend
 
 #-------------------------------------------------------------------------------
 # Channel worker OOM guard
@@ -118,27 +107,52 @@ channel:
   #   - /work/user/trellis_workspace
   # auto_trust_trellis_symlinks: false
 
+#-------------------------------------------------------------------------------
+# Codex (dispatch behavior)
+#-------------------------------------------------------------------------------
+# Codex-only knob; other platforms ignore it. Default ("auto") dispatches
+# trellis-implement / trellis-check / trellis-research sub-agents. This does
+# not rely on inherited parent transcripts: `fork_turns` remains
+# caller-controlled, while Codex's native SubagentStart hook injects task
+# context when trusted and child-side loading remains the fallback when it is
+# unavailable. Set to "inline" only to keep implementation and checks in the
+# main session. "sub-agent" remains a backwards-compatible alias for "auto".
+# Invalid explicit values safely use inline mode.
+#
+# In "auto" mode, dispatched sub-agents inherit the main session's model
+# unless you pin one. To use a cheaper/faster model for implement/check/
+# research sub-agent work, edit `model` / `model_reasoning_effort` directly
+# on the generated `.codex/agents/trellis-*.toml` files (see the commented
+# hint lines in those files) — there is no config.yaml knob for this,
+# `trellis update` preserves your edits across regeneration.
+#
+codex:
+  dispatch_mode: inline
+
 #-------------------------------------------------------------------------------
 # Sub-agent context injection limits
 #-------------------------------------------------------------------------------
-# Trellis 0.6.12 caps injected task artifacts and referenced context. Oversized
-# files are truncated with notice; total-budget overflow degrades remaining
-# files to path/reason/size index lines. Defaults are sufficient for hyb-oa;
-# keep them documented but implicit until a real task proves they need tuning.
-# `0` disables the corresponding byte limit.
+# Caps how much task context (implement.jsonl / check.jsonl referenced files,
+# plus prd.md / design.md / implement.md) gets inlined into a sub-agent's
+# first prompt. Oversized files are truncated with a notice; once the total
+# payload cap is reached, remaining files degrade to index lines (path +
+# reason + size) instead of being inlined.
+#
+# All values are byte counts. `0` disables the corresponding limit.
 #
 # context_injection:
-#   max_file_bytes: 32768
-#   max_artifact_bytes: 65536
-#   max_total_bytes: 131072
+#   max_file_bytes: 32768        # per implement.jsonl / check.jsonl referenced file
+#   max_artifact_bytes: 65536    # per task artifact (prd.md / design.md / implement.md)
+#   max_total_bytes: 131072      # whole injected payload; overflow degrades to index lines
 
 #-------------------------------------------------------------------------------
 # Per-turn prompt injection
 #-------------------------------------------------------------------------------
-# Optional one-turn escape hatch for the per-turn `<workflow-state>` breadcrumb.
-# It uses a case-insensitive standalone-word match and does not affect session
-# start or sub-agent context injection. The project keeps it disabled so task
-# state remains deterministic.
+# Escape hatch for the per-turn <workflow-state> breadcrumb. When a user
+# prompt contains the skip keyword as a standalone word (case-insensitive,
+# word-boundary match — "no-trellisfoo" does NOT count), the breadcrumb is
+# skipped for that turn only. Does not affect SessionStart or sub-agent
+# context injection.
 #
 # prompt_injection:
-#   skip_keyword: "no-trellis"
+#   skip_keyword: "no-trellis"   # "" disables the escape hatch entirely