feat(engine): dynamically project Linear workflow states and transiti…

…ons from DOT graphs

docs: update README and skill docs for DOT Graph Engine

Co-Authored-By: Oz <oz-agent@warp.dev>

Merge branch 'worktree-graph-engine'

Merge pull request #1 from loopworx/graph-engine

feat(engine): Forge Graph Engine — design + Phase 0 DOT types

fix: use destroyRecursively instead of remove to prevent native TextB…

…uffer resource leak

feat: add conversation log file with full event payloads, state dumps…

…, and render failure diagnostics

fix: debounce updateContent for text_delta events to prevent TextBuff…

…er exhaustion

debug: add debug logging instrumentation across send→subscribe→handle…

…Event→updateContent chain

feat: WorkIndicator + ESC abort + StatusBar refactor + coverage 89% F…

…uncs

fix(tui): animated spinner via setInterval, visible sidebar gap, Sele…

…ctOverlay contrast + error handling

3 issues fixed via TDD (14 new tests, 442 total):

1. Spinner static (issue #1):
   Root cause: the live:true + renderAfter mechanism is fragile through
   the ScrollBox content->viewport->wrapper hierarchy. When the spinner
   is scrolled out of the viewport (or the viewport culling filter
   excludes it), renderAfter is not called and the spinner freezes on
   frame 0.
   Fix: add a setInterval (80ms) in ChatView that advances the spinner
   and reassigns spinnerText.content. The content setter triggers
   requestRender() which schedules a fresh render pass regardless of
   culling. The interval starts on setThinking(true) and tool_start;
   stops on setThinking(false), text_delta, tool_end, agent_error,
   agent_settled, and dispose(). ChatView.dispose() clears the interval
   and is called by the /exit command.

2. No visible space between sidebar and chat (issue #2):
   Root cause: root background is #0f0f0f (backgroundPanel), sidebar is
   also #0f0f0f, and the 2-col sidebarGap had no backgroundColor (inherited
   #0f0f0f from root). All three merged into one indistinguishable shade.
   Fix: give mainColumn and sidebarGap the darkest shade #080808
   (background) so they contrast with the panel-shade sidebar and root.
   Also removed a duplicate root.add(mainColumn) left by commit 9a47434.

3. Chat clears + TUI freezes after resume + question (issue #3):
   Root cause: handleForgeEvent's import().then() chain had no .catch().
   When the question callback threw (e.g. SelectOverlay creation failed),
   the error became an unhandled promise rejection. The renderer's
   global unhandledRejection handler swallowed subsequent errors, leaving
   the TUI in a broken state (chat cleared, /sessions stopped working,
   user couldn't type because focus was trapped in a partially-created
   overlay). Additionally, the SelectOverlay used low-contrast colors
   (backgroundPanel #0f0f0f + border #484848) making it nearly invisible
   against the same-shade root.
   Fix: (a) handleForgeEvent: add .catch() to the import().then() chain
   that logs the error. (b) bin/forge.ts setOnQuestion: wrap the entire
   callback body in try/catch/finally with inputBar.focus() in finally
   so focus is ALWAYS restored. (c) SelectOverlay: backgroundColor
   #161616 (backgroundElement, distinct from root #0f0f0f) + borderColor
   #606060 (borderActive, higher contrast) + maxHeight 60% so long
   option lists don't cover the entire screen.

Tests: 442 pass (14 new), 0 TS errors, 0 lint warnings, build OK.