kingwl
1fe2f99580
A ModeDefinition is now exactly { section, access? }; unknown keys (a
tools list included) fail loud at load. What plan mode still does: the
guidance section, the exit_plan_mode visibility rule (plan only, both
soft surfaces), the access cap's bash/resolve-mode clamp, and the two
cap-derived pre-execute guards (the bash trio is withheld when no
confining executor can honor the cap; sandbox escalation is denied
while it holds). The general deny-by-default gate and the assemble
allowlist filter are gone: which tools a mode admits is an effects
question, and a hand-maintained name list mislabels it — it must track
every composed tool and rots silently as tools arrive. The dimension
returns as a consumer of effects self-declaration on tool definitions
(MCP ToolAnnotations as the template) — rationale and restart trigger
archived in the RFC's Alternatives/Deferred; the interim guidance-only
non-shell restraint is priced in Consequences.
Exiting plan is now a pure removal (the exit tool + section), which the
delta encoding CAN express: the re-recorded plan-mode fixture pins one
plan-shaped initial header snapshot plus one header-delta instead of
two snapshots.
mode/ — session-mode policy family
Session modes: named, logged, per-agent policy states, with plan mode as the first shipped definition. A single product package — there is no interface/implementation seam here, because a mode's variable parts are config values (section text, the access cap), not swappable implementations.
| Package | Role | ctx key |
|---|---|---|
mode/ |
mode/set vocabulary + fold, the ctx.modes service (list/get/set with the turn-boundary flush), the mode:policy guidance section, the access cap (a bash/resolve-mode clamp plus the cap-derived bash guards), and the model-facing exit_plan_mode review tool |
ctx.modes |
The mode in force is a pure function of the session log (SessionEventMap['mode/set'], last one wins), so resume and fork restore it with no extra machinery; the default mode is the absence of policy, keeping the plugin invisible until a mode is set. UIs read flips off session/event: the stdio app exposes /mode, the ACP bridge maps the vocabulary to the session-mode picker. RFC: plan mode.