AgentHUD

Added

• Bash stdout / stderr in TUI detail view. Pressing ↵ on a
  Bash row now shows the command's stdout and stderr (with a
  --- stderr --- divider when both are present), plus an
  [interrupted] marker for user-cancelled commands. Previously
  only the one-line command label was visible. TUI-only — Bash
  output stays out of the report / summary markdown payload
  so the LLM input doesn't balloon on npm test-style runs.

Fixed

• Activity viewer cursor stayed at the same screen row when new
  entries arrived in LIVE mode, silently sliding the highlight to
  a newer activity. Now the cursor anchors to its activity:
  walks up the screen as new entries push the live edge forward,
  and when it would scroll off the top, auto-pauses and freezes
  the view on the same snapshot (so [PAUSED ↑N +M↓] reflects
  exactly where you are and how many you've missed). Per-render
  scroll bump moved from refresh into a centralized useEffect
  on mergedActivities.length so it fires regardless of which
  code path updates activities.

Docs

• FEATURES.md rewritten from scratch for v0.13.0. The
  original was last touched in early January 2026 and every H2
  section referenced code that no longer exists. Replaced with a
  feature-centric reference matching what ships today: overview
  matrix at the top, one H2 per user-facing feature, plus
  cross-cutting sections for keybindings, files, and env vars.
  954 lines → 451.
• README slimmed to a landing page; FEATURES.md is the
  reference. 314 lines → 94. README keeps the pitch, install,
  platform note, quickstart, ASCII screenshot, and brief config
  overview; everything else links to FEATURES.md anchors.
• File-header convention applied across all 31 source files
  (purpose / design decisions / gotchas). Convention itself
  documented in global ~/.claude/CLAUDE.md. Documents
  non-obvious decisions in place so future-me / others don't
  re-litigate them.
• BACKLOG.md for items flagged or discussed but deliberately
  deferred. Issues stay for actionable work; the file is for the
  "noted but parked" pile.
• Daily summary prompt refined. Explicit icon legend so the
  LLM doesn't have to guess ○ ~ $ * @ » < > … ◆, multi-project
  awareness, first-person retro voice, light-day fallback to a
  short paragraph instead of padding empty sections, sharper "do
  NOT" list.