feat(tui): modernize execution and focused workflows

[drewstone]

Outcome

Braid now presents one stable execution identity above the transcript: AgentProfile, runner, model, connection, reasoning level, workspace, conversation, and branch.

Focused workflows use one divided full-screen surface.
/ask, comparisons, forks, approvals, and questions keep their consequence, response controls, and Escape or left-arrow path visible down to 40 by 12 cells.

Usage remains honest and separate for direct turns, analysis calls, and workers.
Estimated cost uses ~, observed floors use ≥, and missing measurements remain unknown.

The former 477-line terminal coordinator is split into bounded identity, usage, focused-surface, and composition modules.

Real Pi product proof

This GIF is a clean install of the exact packed Braid candidate.
It configures a Product engineer AgentProfile, routes a coding task through Local CLI Bridge to Pi and GLM 5.2, verifies the changed workspace, then types /ask and displays the cited trace analysis.

Final analysis frame:

• Exact source commit: ab893af041e6d7d0efe670b9472af6a0d9bea651
• Exact tarball SHA-256: 8dddc8d112dd142b8a11c5c08a4f7c59ed031fcae80a31081264de353988671a
• Coding result: 8 passed, 0 failed; 12,804 input and 2,173 output tokens
• /ask result: 3 cited findings; 7 of 7 calls visible across 2 pages
• Analysis usage: 53,757 input and 8,153 output tokens; estimated cost $0.0501908
• Packed visual coverage: 75 artifacts, 11 states, and 4 terminal sizes

Verification

pnpm check passed.

• 615 runnable repository tests passed; 2 protected external checks skipped
• 15 performance tests passed
• 18 live-demo safety tests passed
• CLI Bridge adversarial matrix passed
• 457 modules and 2,336 edges have zero cycles
• 68 production packages have no known vulnerability

External limits

Braid exposes two current runtime limits instead of simulating support:

• feat(runtime): relay live executor output through streamAgentTurn agent-runtime#762: normalized incremental tool events
• feat(execution): expose exact interactive session attachment agent-runtime#773: exact execution and worker attachment

Protected Tangle inference and sandbox checks still require their service credentials.