Eric Traut c03eb20d8d Fix side conversation config inheritance (#22106)
Addresses #22101

## Why

Side conversations are ephemeral forks of the active thread, but `/side`
was building its fork config from the app-level config after refreshing
it from disk. If the parent thread had runtime settings that differed
from the current persisted defaults, such as a changed model, reasoning
effort, permissions, reviewer, or fast-mode selection, the side
conversation could start with different behavior than its parent.

## What changed

- Build side fork config from the active parent `ChatWidget` config,
then overlay the parent thread's effective model, reasoning effort,
service tier, and fast-mode opt-out state.
- Forward model reasoning summary, verbosity, personality, web search
mode, and service-tier overrides through TUI app-server
start/resume/fork lifecycle params.
- Add focused tests for parent runtime inheritance, side developer
guardrail preservation, and lifecycle param forwarding.
2026-05-11 09:47:51 -07:00
2026-04-24 17:49:29 -07:00
2025-04-16 12:56:08 -04:00
2025-04-16 12:56:08 -04:00
2026-04-24 17:49:29 -07:00
2026-04-07 10:55:58 -07:00

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