design multitab pane widget (T-83)

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Reusable widget for panes that need N runtime tab instances of the
same kind. First consumer is the Claude pane (primary + 0..N
secondaries per D-41); the generic shape lets other panes adopt it
later without reinventing tab strips.

Includes:
- Design doc with API sketch, rendering, interaction, persistence
  boundary, integration sketch for the Claude pane, and three open
  questions (keyboard scoping for nested cases, overflow, density).
- Wireframe of the Claude pane with primary (pinned) + 2 secondaries
  + add button, accent border on the active tab.
- Architecture diagram (sketch mode) showing the host / widget /
  controller / IPC boundary that keeps the widget domain-free.

Co-Authored-By: Claude <noreply@anthropic.com>

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This commit is contained in:

jpmschweitzer

2026-05-06 12:04:42 +02:00

co-authored by Claude

parent 4043c2cbe0

commit bdc46a4fdd

6 changed files with 589 additions and 4 deletions

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docs/wireframes/main/claude-multitab.png

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