Watch: activity line on working cards, All threads browsing, a thread's subagents, Load earlier, and markdown messages

watch/README.md

@@ -40,7 +40,9 @@ register their token with the gateway as `production`, Debug builds as `sandbox`
 `DemoGateway` serves fixture data shaped like the docs/api.md examples, and it reacts to writes:
 Allow moves a thread to working, a reply restarts a finished thread, and Settle hides a thread from
 the feed. One card carries a subagent's request, so its Allow goes to the subagent's thread. Recent
-holds 14 threads, so the feed shows its first 10 and a "4 more" row. The SwiftUI previews use it,
+holds 14 threads, so the feed shows its first 10 and a "4 more" row. The working cards show
+activity lines, the Containerfile thread has two subagents, and "Fix hyprlock crash" has two older
+pages behind Load earlier. The SwiftUI previews use it,
 the pairing screen has a "Try the demo" button, and launch arguments open a screen directly:
 
 ```sh
@@ -51,12 +53,14 @@ xcrun simctl launch <udid> org.gbrown.wristcode.watchkitapp -demo -screen recent
 xcrun simctl launch <udid> org.gbrown.wristcode.watchkitapp -demo -screen status                 # status overview
 xcrun simctl launch <udid> org.gbrown.wristcode.watchkitapp -demo -host laptop                   # one environment
 xcrun simctl launch <udid> org.gbrown.wristcode.watchkitapp -demo -screen notifications          # notifications
+xcrun simctl launch <udid> org.gbrown.wristcode.watchkitapp -demo -screen threads                # All threads
 ```
 
 `screenshots/` holds the screens captured this way. The complication, the multi-select question, the
 status screens, the subagent card and thread, Recent with Settle all and the "N more" row, the full
-Recent list, a finished thread with Settle, a running thread with Ask before acting, and New thread
-with its model list are rendered by `SnapshotTests` instead, which only run when given a directory:
+Recent list, a finished thread with Settle, a running thread with Ask before acting, New thread
+with its model list, the working cards' activity lines, All threads' hosts and a project's threads,
+a thread's subagents, and Load earlier with markdown are rendered by `SnapshotTests` instead, which only run when given a directory:
 
 ```sh
 TEST_RUNNER_WC_SCREENSHOT_DIR=$PWD/screenshots xcodebuild -scheme WristCode \
@@ -83,6 +87,29 @@ and the full list, is one `POST /v1/recent/settle` for every completed thread in
 those past the first 10. Failed threads stay. The completed rows leave at once, and the header says
 so when the call fails or some threads did not settle.
 
+## Activity, All threads and history
+
+A working card shows the step the agent is on instead of its last message: a teal symbol for the
+kind (command, edit, search, web, subagent, thinking or tool), the text, commands and file names in
+monospace, and how long the step has run on the right. The time is worked out when the card renders,
+so it moves on with the feed's 10 s refresh. Nothing ticks between refreshes. A card falls back to
+the last message when the gateway names no step.
+
+The feed's last row opens All threads: hosts from `GET /v1/projects` (offline ones dimmed), then a
+host's projects by title, then the project's threads from
+`GET /v1/projects/:hostId/:projectId/threads`, settled ones included. Each thread is one line with
+a status dot and its age, and opens the usual thread screen. Each screen loads when it appears.
+
+A thread screen lists the thread's subagents under its messages, above Reply, each with a status
+word. A row opens that subagent's thread. When the thread has messages before the latest 20, Load
+earlier at the top fetches the page before them (`GET /v1/threads/:hostId/:threadId/history`), and
+the next tap uses the cursor that page returned. The 10 s refresh replaces only the latest window.
+Loaded pages stay, and a message shows once by id. Message text renders as markdown: bold, italics,
+inline code and links inline, headings in bold, list items as bullets, and fenced code in monospace.
+
+Against a gateway older than these fields, the cards show the last message, and Load earlier and
+the subagents stay hidden.
+
 ## Status and settings
 
 The gear at the top left of the feed opens the status overview (`GET /v1/status`). It leads with
@@ -137,6 +164,8 @@ To add it: long-press the watch face, Edit, swipe to Complications, pick a slot,
 | `Shared/SharedState.swift` | Demo flag and last summary in the shared Keychain group, for the complication |
 | `Demo/DemoGateway.swift` | In-memory gateway with fixtures |
 | `Views/` | Pair, Feed, full Recent list, Thread, New thread, Status, and the mock B theme |
+| `Views/BrowseView.swift` | All threads: hosts, a host's projects, a project's threads |
+| `Views/Markdown.swift` | Message text as styled text |
 | `Views/StatusReport.swift` | What the status overview says: headline, issues worst first, healthy hosts |
 | `Notifications/NotificationHandler.swift` | Categories `approval`, `finished`, `failed`, `input`, `host`, `test` and their actions |
 | `../WristCodeWidget/` | The complication: timeline provider, and one view per family |