Inline TUI and agent micro-modules and merge the delivery queue trio

[TheGreatAxios]

Summary

• Remove 20 director one-line re-export barrels to direct imports via registry.
• Remove TUI barrels (view/index, view/registry, geometry/index) to direct imports; merge geometry/margins into zones and prompt micro-modules into natural owners.
• Extract one shared lexical ranker (lexical-rank.ts) for agent/skill/tool search.
• Merge session-queue, queued-delivery, and session-operation-queue into delivery-queue.ts (verbatim moves, no behavior change).

Verification

• typecheck: clean except two pre-existing url-links getLinkAt errors, also present on base HEAD and untouched by this diff.
• bun test src/tui/ tests/unit/tui/ tests/unit/approval-resume.test.ts: 2530 pass, 1 fail (pre-existing url-click getLinkAt drift, untouched by this diff).
• Queue-focused suites: 284 pass, 0 fail. Agent suites (src/agent, tests/unit/agent): 729 pass, 0 fail.

Fixes CL-7949

[linear-code]

CL-7949