Replaces the previous 3-tab strip (Ask / Inspect / Chunks) with a
top-right view switcher per the 0.6.1 mockup. The switcher renders
three buttons; Compare is intentionally disabled until 0.9.0 ships
the diff view.
DocMode union shrinks to { 'inspect', 'linked' } — only the modes
that render a tab today. The legacy 'chunks' mode value is renamed
to 'linked' to anticipate the upcoming Linked view refactor (T3);
?mode=chunks remains accepted as a backward-compat alias in parseMode
so existing bookmarks keep working.
'ask' is dropped from the workspace per ADR #259 (Ask moves out of
the doc workspace and is handled separately via the standalone
/reasoning page). The askMode feature flag is preserved in the
registry so the existing reasoning surface stays gateable; it is no
longer part of modeFlags() which now returns { inspect, linked }.
DEFAULT_MODE shifts from 'ask' to 'linked' (the mockup's default
view). MODE_PRIORITY drops to ['linked', 'inspect'].
DocWorkspaceHeader gains an `actions` named slot, used by the
workspace page to inject the switcher inside the sticky header,
matching the mockup layout.
i18n cleanup:
- adds workspace.tabs.linked, workspace.tabs.compare,
workspace.compareSoon
- removes workspace.tabs.ask, workspace.tabs.chunks, and the obsolete
workspace.{askComingSoon,inspectComingSoon,*Hint} placeholders
- renames breadcrumb.mode.chunks -> breadcrumb.mode.linked and drops
breadcrumb.mode.ask
DocAskTab.vue is kept on disk (no longer imported by the workspace)
to avoid touching reasoning-related code in this refactor — its
removal, if any, is the call of the separate Ask-handling track.
Tests:
- modes.test.ts asserts the new isDocMode/parseMode behaviour including
the chunks->linked alias
- resolveMode.test.ts targets the 2-mode priority
- router.test.ts covers both ?mode=inspect and the chunks->linked alias
- feature-flags/store.test.ts asserts modeFlags() returns { inspect, linked }
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