todo: parity gaps vs bitburner-agent — state badge, slash cmds, stats, nap, viz polish, persistent event history

TODO.md

@@ -21,16 +21,67 @@ Pick anything from here when relevant. Cross-cutting design notes live in
 - **Model override.** Hard-coded to `haiku` in the turn loop right now.
   Surface as a per-agent override: operator via dashboard, manager via
   `request_apply_commit` setting an attr on the agent's flake (most natural
-  place since the flake already carries per-agent env/identity).
+  place since the flake already carries per-agent env/identity). Pair with
+  a **model status** indicator on the agent page (active / queued / last
+  switched) once the override is in place.
 
 ## UI / UX
 
 - **Per-agent UI substance.** Show last N inbox messages, last turn timing,
   link back to dashboard.
+- **Delivered events history persistence.** The `events::Bus` ring
+  buffer (500 events, in-memory) backfills the terminal on page load
+  but dies on harness restart, and only ever holds the most recent
+  turn or two. Persist to sqlite (`events(agent, id, ts, kind,
+  payload_json)`) so the operator can scroll back through prior
+  turns, and so `/events/history` survives restart. Cap rows per
+  agent or auto-vacuum on age, same trade-off as the bounded broker
+  entry below.
+- **Granular agent state badge** above the terminal: `idle 💤 / thinking 🧠 /
+  compacting 📦` with an age timer (`thinking · 12s`). Drives a state
+  channel from the harness: idle when waiting on the inbox, thinking
+  while claude's stream is open, compacting when `/compact` is in
+  flight. Replaces the binary "harness alive — turn loop running" line.
+- **Terminal: slash commands + tab-completion.** Operator-facing
+  in-terminal commands: `/help`, `/model`, `/compact`, `/clear`. Tab
+  completes command names + model names (cf. bitburner-agent's pattern).
+- **Terminal: multi-line input.** Replace the single-line `<input>` with
+  an auto-growing textarea; Enter sends, Shift+Enter newlines.
+- **Terminal: cancel-current-turn button.** Explicit "kill claude
+  process for this turn" control. Harness needs to track the
+  in-flight claude child PID and offer a `/cancel` endpoint that sends
+  SIGTERM; UI surfaces a button while the state badge is `thinking`.
+  Slash-command equivalent: `/cancel`.
+- **`/compact` trigger.** Operator-initiated compaction of the current
+  claude session — `claude --print --continue` with `/compact` over the
+  same session id. Surfaces as a slash command in the terminal + a
+  toolbar button while the state badge is `idle`. Sets state to
+  `compacting` during the run.
+- **Visuals.** Frosted-glass backdrop blur on the terminal wrap,
+  per-event fade-in slide-up animation on new rows, badge pulse
+  animation on state-badge transitions.
 - **xterm.js terminal** embedded per-agent, attached to a PTY exposed by
   the harness. Pairs well with the unprivileged-container work — would let
   the operator drop into the container without `nixos-container root-login`.
 
+## Telemetry
+
+- **Harness stats per agent in sqlite, charted on the agent page.**
+  bitburner-agent samples 18 series; for hyperhive the generally-applicable
+  ones are:
+  - turns/min, tool calls/turn, turn duration p50/p95
+  - claude exit code distribution (ok vs `--compact`-retry vs failure)
+  - inbox depth (current + max-over-window)
+  - messages sent/received per turn (split by recipient: peer / operator /
+    manager / system)
+  - approval queue length (across all agents — dashboard-level)
+  - per-tool usage counts (Read/Edit/Bash/send/recv/…)
+  - time-since-last-turn (helps spot stuck agents)
+  - notes file size growth (cues compaction)
+  Backend: a `stats` table with `(agent, ts, key, value)` written from
+  the harness on `TurnEnd`; `GET /api/stats?since=…` returns the
+  series; agent page renders with a small chart lib (uPlot is light).
+
 ## Manager → operator question channel
 
 - **TTL / cancel on `ask_operator`.** Questions today block forever; the
@@ -42,6 +93,14 @@ Pick anything from here when relevant. Cross-cutting design notes live in
 
 ## Loop substance
 
+- **`nap` tool.** Agent-side MCP tool `mcp__hyperhive__nap(seconds)` that
+  parks the turn loop for a short while before next-message processing.
+  Use cases: agent decides it has nothing useful to do, or wants to
+  throttle itself between rapid wake events. Implementation: harness
+  records a "wake-not-before" timestamp; `recv_blocking` skips the long
+  poll until that ts; the state badge reads `napping · MM:SS` during.
+  Operator can cancel via the same `/cancel` slash command or a
+  dashboard button.
 - **Notes compaction.** `/state/` is bind-mounted persistently and agents
   are told (in the system prompt) to keep `/state/notes.md` for durable
   knowledge — but we don't currently nudge them to compact when notes