hyperhive/docs/terminal-rendering.md
iris 229c4292e9 frontend: cut over Rust binaries to ServeDir; delete legacy assets
Phase 4 of #273 — the actual switch. Both axum routers now serve
their static surface via `tower_http::services::ServeDir` mounted
as a fallback service, reading the dist path from `HIVE_STATIC_DIR`
(set by Phase 3's NixOS module wiring).

Deletes:
- `hive-c0re/assets/{index.html, app.js, dashboard.css}`
- `hive-ag3nt/assets/{index.html, app.js, agent.css, stats.html,
   stats.js, screen.html}`
- The whole `hive-fr0nt/` crate (workspace member dropped, both
  hive-c0re and hive-ag3nt drop their `hive-fr0nt.workspace = true`
  dep). Its contents now live as `@hive/shared` under
  `frontend/packages/shared/`.

Rust changes:
- `hive-c0re/src/dashboard.rs`: remove `serve_index`, `serve_css`,
  `serve_app_js`, `serve_shared_js`, `serve_marked_js`,
  `serve_favicon` (all six `include_str!` handlers); replace their
  routes with a single `.fallback_service(ServeDir::new(static_dir))`
  on the router. Fail closed (anyhow::bail) if `HIVE_STATIC_DIR` is
  unset or not a directory at startup.
- `hive-ag3nt/src/web_ui.rs`: remove `serve_index`, `serve_css`,
  `serve_app_js`, `serve_shared_js`, `serve_marked_js`,
  `serve_stats`, `serve_stats_js`, `serve_screen`; same
  `fallback_service` pattern. `serve_icon` stays (consumes
  `/etc/hyperhive/icon.svg` + `branding/hyperhive.svg` fallback,
  neither of which lives under the frontend dist).
- `AgentLink` URLs for stats/screen switched from `/stats` / `/screen`
  to `/stats.html` / `/screen.html` since ServeDir doesn't auto-
  append the extension and the on-disk filename is the natural URL
  post-cutover.
- `Cargo.toml` (workspace): drop `hive-fr0nt` member + workspace
  dep, add `tower-http = { version = "0.6", features = ["fs"] }`.
- `hive-c0re/Cargo.toml` + `hive-ag3nt/Cargo.toml`: drop the
  `hive-fr0nt.workspace = true` dep, add `tower-http.workspace =
  true`.

Docs updated:
- `CLAUDE.md`: file map reflects `frontend/` (was `hive-fr0nt/` +
  `assets/`) and the ServeDir/HIVE_STATIC_DIR shape.
- `docs/web-ui.md` 'Shape (shared by both)' section: describes the
  ServeDir fallback + bundled-by-esbuild surface, no more
  `include_str!` references.
- `docs/terminal-rendering.md`: src paths point at
  `frontend/packages/{agent,shared}/src/`; marked is the npm dep,
  not vendored UMD.

Validation:
- `cargo check --workspace` — clean (5 warnings, all pre-existing
  in `rebuild_queue.rs`, none on changed files).
- `cargo clippy --workspace --all-targets` — clean (11 warnings,
  same pre-existing source).
- `cd frontend && npm run build` from the prior commit's lockfile
  produces the dist directories the new routers consume:
    dashboard: `dist/{index.html, static/{app.js, dashboard.css}}`
    agent:     `dist/{index.html, stats.html, screen.html,
                       static/{app.js, stats.js, agent.css}}`
  (favicon.svg lands in dashboard/ during the nix build —
  `nix/frontend.nix` install phase copies `branding/hyperhive.svg`
  there, since it's outside the npm tree.)

Refs #273.
2026-05-23 14:51:01 +02:00

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Markdown

# Per-agent terminal: row taxonomy (as built)
Snapshot of how the per-agent web UI's live pane renders each
event kind today. Source of truth lives in
`frontend/packages/agent/src/app.js` (`renderStream`, `fmtToolUse`,
`renderRichToolUse`, `renderToolResult`, `renderTaskEvent`,
`mdNode`, `detailsOpenMd`, `fmtArgsGeneric`) +
`frontend/packages/shared/src/terminal.css` (the shared
`.live .<class>` styling) + the `marked` npm package (markdown).
## Layout contract
Every row — flat `<div class="row …">` and expandable
`<details class="row …">` alike — shares one prefix column.
The mechanism is `padding-left + negative text-indent` on
`.live .row`: the row's first character (the prefix glyph)
gets pulled back into the column at ~0.5em, and wrapped
continuation lines hang under the body, not under the glyph.
`<details>` summaries inherit those metrics. The disclosure
marker (`▸` / `▾`) is supplied by CSS `summary::before` so it
lands in the same column as flat-row glyphs. To make that
work the JS-side summary text **does not** include a
directional `→` / `←` — the row's colour (cyan = outbound,
muted = inbound) carries the direction, and the prefix
column never has to fit two glyphs side-by-side.
Child blocks inside a row (the `.md` markdown wrapper, an
inner `<details>`) get `text-indent: 0` so their content
lays out from the body column instead of inheriting the
parent's negative pull.
## Row taxonomy
| CSS class | Prefix glyph | Color | Triggered by | Source |
|---|---|---|---|---|
| `.turn-start` | `◆ TURN ← <from>` | amber, left rule | `LiveEvent::TurnStart` | harness wake |
| `.turn-body` | (child div under turn-start) | fg | same | the wake-prompt body |
| `.turn-end-ok` | `✓ turn ok` | green, left rule | `LiveEvent::TurnEnd { ok: true }` | harness |
| `.turn-end-fail` | `✗ turn fail — note` | red, left rule | `LiveEvent::TurnEnd { ok: false }` | harness |
| `.text` | (no prefix; markdown body) | fg | claude `assistant.content[].text` | stream-json |
| `.thinking` | `· thinking …` | muted, italic | claude `assistant.content[].thinking` | stream-json |
| `.tool-use` (flat) | `→ Name args…` | cyan | tool_use w/o rich renderer | stream-json |
| `.tool-use` `<details>` | `Write/Edit <path> · +N` (no `→`) | cyan, body is +/- diff | `renderRichToolUse` Write/Edit | stream-json |
| `.tool-use` `<details open>` | `send → to · NL`, `ask → to`, `answer #id` | cyan, body is markdown | rich renderer for send / ask / answer | stream-json |
| `.tool-result` (flat) | `← <txt>` | muted | short `tool_result` (≤120c, non-recv) | stream-json |
| `.tool-result-block` `<details>` | `Nl · headline` | muted, body is text | long generic `tool_result` | stream-json |
| `.tool-result-block` `<details open>` | `recv ← <txt>` | muted, body is markdown | `tool_result` correlated to a prior `recv` tool_use via id | stream-json |
| `.tool-use` | `⌁ task <id> started · <desc> [type]` | cyan | claude Task-tool subagent start | `renderTaskEvent` |
| `.turn-end-ok` / `.turn-end-fail` / `.tool-result` | `⌁ task <id> ✓/✗/◌ <status> · <desc> · → <output_file>` | green / red / muted | claude Task-tool result | `renderTaskEvent` |
| `.note` | `· <text>` | muted | harness chatter | `LiveEvent::Note` |
| `.note.stderr` | `! stderr: <line>` | amber/orange | stderr lines off claude | `LiveEvent::Note` (`text` starts `stderr:`) |
| `.note.op` | `· operator: <text>` | mauve italic | operator-initiated notes (/cancel, /compact, /model, new-session) | `LiveEvent::Note` (`text` starts `operator:`) |
| `.sys` | `! {json…}` | amber/orange | catch-all for stream shapes `renderStream` didn't classify | catch-all |
| Banner shimmer | mauve | turn in flight (ref-counted) | — | `setBannerActive` |
## Renderer dispatch
`renderStream(v, api)` walks each stream-json line:
1. Drops `system/init`, `rate_limit_event`, `result` (noise /
handled elsewhere — `result` powers the `cost` badge).
2. `subtype == "task_started" | "task_notification"`
`renderTaskEvent` (subagent activity gets the `⌁` glyph).
3. `type == "assistant"` → walk `message.content[]`:
- `text``.text` row with a markdown body via `mdNode`.
- `thinking``.thinking` row.
- `tool_use` → record `id → name` in `toolNameById`, try
`renderRichToolUse` (Write/Edit/send/ask/answer get
custom renderings); on miss fall through to a flat
`.tool-use` row with `fmtToolUse → fmtArgsGeneric`.
`fmtToolUse` surfaces the salient arg per built-in tool —
e.g. `recv` shows `wait <N>s` / `max <N>` when set (bare
`recv()` otherwise), `Bash` flags `[bg]` for
`run_in_background` commands.
4. `type == "user"` → walk `message.content[]` for
`tool_result`; `renderToolResult` correlates via
`tool_use_id → toolNameById` to default-open `recv`
results with a markdown body, else short = flat /
long = collapsed details.
5. Unrecognised shape → `.sys` row (amber, `!` glyph).
## Markdown
`mdNode(text)` wraps `marked.parse(text)` (the `marked` v4.x npm
dep, bundled by esbuild into the page's `app.js`) in a `<div
class="md">`. CSS in `terminal.css` scopes paragraph / code /
list / blockquote / link styling under `.live .row .md` so
the markdown body doesn't bleed into the row's own
text-indent. Falls back to plain text if `marked` didn't
load. Applied to `text` rows and to send / ask / answer /
recv message bodies.
## Extra-MCP tools
`fmtArgsGeneric(name, input)` is the fallback when a tool
isn't in the built-in `fmtToolUse` switch:
- single string field → `name k: "v"`
- single number/bool field → `name k: v`
- multi-field → first 4 pairs trimmed to `k: "v"` /
`k: [N]` / `k: {…}` with a `…+N` overflow
This keeps `mcp__matrix__send_message` and similar from
dumping raw JSON.
## Dashboard side (not covered here)
The main dashboard's message-flow pane is a different
shape: broker messages render as `.msgrow` grid lines (ts /
arrow / from / → / to / body) with their own styling.
`.live .msgrow` explicitly resets `text-indent: 0` so the
per-agent terminal's hanging-indent metrics don't leak into
the flex-grid broker rows.