Adds toolchain_match_enabled to FEATURE_FLAGS so the panel's Settings ->
Feature Flags card can arm/disarm it (overriding the env default at the next
backend restart). The card is data-driven; only a one-line description blurb is
added. Validator, effective-value, and startup overlay auto-wire from the
tuple.
Add self_heal_enabled (detect + notify) and self_heal_originate_enabled (also
open fix tasks) to the panel feature-flags registry + card, so the loop can be
armed/disarmed from Settings instead of editing env. Effect is on the next
restart, like the other flags; the self_heal_project_slug target (which repo is
RoboCo) stays a deployment env setting.
Add a Feature Flags card to the Settings page that toggles env-gated
subsystems (external/internal PR review, web research, strategy engine,
pitch provisioning, RAG auto-update, transcript pruning) directly from
the panel instead of hand-editing environment variables.
Flags persist in system_settings as 'true'/'false' and are overlaid onto
the live config singleton at startup; an unset flag keeps its
environment/config default. A toggle takes effect on the next backend
restart — no per-consumer re-routing.
Backend: FEATURE_FLAGS registry + bool validator + get_bool accessor on
SettingsService; feature_flag_effective_values and
apply_persisted_feature_flags; GET /settings/feature-flags; best-effort
startup overlay in the app lifespan.
Frontend: settingsApi.getFeatureFlags / setFeatureFlag and a
FeatureFlagsCard rendered full-width below the settings grid.
Renn F