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Turtle 4c5f92e0fd feat(tui): personal TUI rework, integrating upstream model reasoning-effort selection

Consolidates the personal dsh-tui customizations (module split into
components/session/extension, prompt template + running-glyph indicator,
copyable transcript, tool-card headers, timing placement, XML tool output,
status/footer rework) and ports upstream's model reasoning-effort selector
(Shift+Tab effort cycling, effort-aware /model, footer, and /status) onto
the personal module layout.

2026-07-27 18:55:13 +08:00

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Agent Note: The prompt context combines directory and branch

Status: implemented

English | 中文

Problem

The idle prompt context rendered the working directory and git:<branch> as separate segments. In task worktrees, the directory can already identify the checkout, while the prefixed branch segment consumed additional horizontal space and was discarded independently on narrower terminals.

Decision

The prompt context renders the working directory and available Git branch as one workspace label: <directory> (<branch>).
The directory remains bold and accented; the parenthesized branch remains muted.
The combined workspace label has the highest retention priority and is clipped as one segment when it exceeds the terminal width.
Outside a Git worktree or on detached HEAD, the label remains the directory alone.

Alternatives considered

Keep git:<branch> as a separate segment. Rejected: the prefix and separator use more columns without adding meaning in this context.

Show only the branch. Rejected: the session working directory determines where tools operate and remains the primary prompt context.

Derive a special worktree root label. Rejected: the existing formatted directory and Git branch already provide the two relevant facts without adding repository-layout assumptions.

Consequences

A typical checkout renders as ~/git/tui-staging (tui-staging).
Narrow terminals retain or clip directory and branch together instead of dropping the branch independently.
Embedding-provided TuiRuntime.formatCwd labels compose with the branch in the same form.

Testing

packages/ui/tui/tests/tui.spec.ts pins home, absolute, formatted, and narrow workspace labels. Package-local and runnable-example TUI snapshots verify the assembled prompt context.

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