fix(chat): retain expanded preview collapse state

[chryzxc]

Fixes the response preview state so the Show less control remains available after expansion.\n\nVerification: TAP version 13

Subtest: chat source css keeps active Tailwind directives

ok 1 - chat source css keeps active Tailwind directives

duration_ms: 1.388125
...

Subtest: chat css pipeline keeps Tailwind enabled for utility-heavy React chat components

ok 2 - chat css pipeline keeps Tailwind enabled for utility-heavy React chat components

duration_ms: 0.287042
...

Subtest: details tabs use one shared content gutter with an overview reset

ok 3 - details tabs use one shared content gutter with an overview reset

duration_ms: 0.382542
...

Subtest: Active Task is a peer overview section instead of a parent heading

ok 4 - Active Task is a peer overview section instead of a parent heading

duration_ms: 0.276583
...

Subtest: overview section headers use labels and chevrons without decorative dots

ok 5 - overview section headers use labels and chevrons without decorative dots

duration_ms: 0.378583
...

Subtest: active checklist progress marker uses the themed status indicator

ok 6 - active checklist progress marker uses the themed status indicator

duration_ms: 2.184209
...

Subtest: active compaction uses the shared card border token

ok 7 - active compaction uses the shared card border token

duration_ms: 0.514
...

Subtest: activity path tooltips use an owned opaque surface

ok 8 - activity path tooltips use an owned opaque surface

duration_ms: 0.565291
...

Subtest: response previews stay contained inside activity cards

ok 9 - response previews stay contained inside activity cards

duration_ms: 0.99425
...

Subtest: expanded response previews retain their collapse control

ok 10 - expanded response previews retain their collapse control

duration_ms: 0.725833
...

Subtest: markdown-body ordered lists must display with decimal numbers (not bullets)

ok 11 - markdown-body ordered lists must display with decimal numbers (not bullets)

duration_ms: 0.383
...

Subtest: markdown-body unordered lists must display with disc bullets

ok 12 - markdown-body unordered lists must display with disc bullets

duration_ms: 0.237209
...

Subtest: markdown-body lists must have separate rules for ul and ol (not combined)

ok 13 - markdown-body lists must have separate rules for ul and ol (not combined)

duration_ms: 0.410292
...

Subtest: markdown-body code blocks must include a visible copy button affordance

ok 14 - markdown-body code blocks must include a visible copy button affordance

duration_ms: 0.429917
...
1..14

tests 14

suites 0

pass 14

fail 0

cancelled 0

skipped 0

todo 0

duration_ms 83.778541

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📥 Commits

Reviewing files that changed from the base of the PR and between 2cf4be8 and 83b5272.

📒 Files selected for processing (2)

• tests/regression/chat-css-regression.test.mjs
• webview/shared/src/chat/MessageComponents.tsx

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