feat(mobile): fixture-only J5 scene captures for PR evidence

[Jacksondr5]

Every mobile UI PR needs before/after screenshots. In #337 that meant an hour of creating fixtures with live Claude agents, then cropping real-data screenshots because j5/evidence is public.

What this adds

• scripts/j5/mobile-scenes.sh --out <dir> <agent-device> <target args…>, a fixture-only capture script. It:

  • seeds a disposable home with J5's existing A2A delivery seed, which uses production services and runs no provider work
  • serves that home on a free port
  • pairs the running J5 Code Dev client through the test-t3-mobile helper
  • opens each seeded thread and pages from the newest message to the top in half-screen steps, saving one PNG per screen

  It hides the Expo dev-menu button on simulators, normalizes the status bar, then stops the server and deletes the home.

• A machine-sender scenario in the seed, so automation messages get a before frame too (its test is updated).

Frames currently cover a peer ask (with its send_message reply instruction), a silence notice, a human Inbox answer, a machine message, an unknown envelope, and a plain MCP send. That's the "before" state for the Phase 1 A2A card work. Crew notices, spawn briefs, queued deliveries, open proposals and the new-task sheet need new seed scenarios; they're tracked in #374.

I kept this separate from upstream's App Store showcase harness. That harness seeds the older projection tables and drives its own in-app coordinator. It now builds and captures correctly with J5 ids (#371, verified here: --device iphone-6.9 --scene threads --scene thread), but it's for store assets, not J5 evidence.

Stacked on #371, which fixes the J5 ids this script relies on.

Verification (iPhone 17 Pro simulator, dev client on Metro):

• Script run: 7 receiver frames and 2 sender frames, with no duplicates and full coverage. Examples: receiver-01, receiver-04, sender-02.
• devDeliverySeed.test.ts passes (7 cancelled provider starts, no active runs). Server typecheck, lint and format are clean, and shellcheck is clean.

Closes #367

🤖 Generated with Claude Code. Claude Opus 5.5 in J5 Code.

Summary by CodeRabbit

• Tests
  • Delivery-seed checks now cover a machine-sent message reaching the receiver thread, including its delivery identifiers and the cancellation of the associated provider-start effect.
• Tools
  • Added a mobile scene-capture utility that prepares sample delivery threads and saves screenshots while navigating them. It can retain the temporary setup for inspection or clean it up afterward.

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📥 Commits

Reviewing files that changed from the base of the PR and between 968ff42 and 64e0753.

📒 Files selected for processing (3)

• apps/server/src/j5/a2a/test-support/devDeliverySeed.test.ts
• apps/server/src/j5/a2a/test-support/devDeliverySeed.ts
• scripts/j5/mobile-scenes.sh

📝 Walkthrough

Walkthrough

The seed now includes a machine-message scenario and records its identifiers in the receipt. A new mobile script seeds fixtures, starts a local server, pairs a J5 Code Dev client, and captures sender and receiver threads.

Changes

Fixture delivery scenes

Layer / File(s)	Summary
Machine-message seed scenario apps/server/src/j5/a2a/test-support/devDeliverySeed.ts, apps/server/src/j5/a2a/test-support/devDeliverySeed.test.ts	The seed registers seed-watchdog, sends a no-reply message to the receiver, drains delivery, interrupts the resulting run, and records the sender and message identifiers with the target thread. The test checks these values and expects seven cancelled provider-start effects.
Mobile scene setup and capture scripts/j5/mobile-scenes.sh	The script seeds fixtures, starts a local server, pairs the client, and captures sender and receiver threads. It supports optional simulator dev-button hiding, screenshot comparison, paired-connection cleanup, and temporary-home retention.

Priority: ⬇️ Low

Estimated code review effort: 3 (Moderate) | ~20 minutes

Change: Feature

Sequence Diagram(s)

sequenceDiagram
  participant Script as mobile-scenes.sh
  participant Seed as runDevDeliverySeed
  participant Server as Local J5 server
  participant Client as J5 Code Dev client
  Script->>Seed: Seed delivery fixtures and receive scenario receipt
  Script->>Server: Start server with seeded environment
  Script->>Client: Pair client with local server
  Client->>Server: Load sender and receiver threads
  Script->>Client: Capture thread screens while paging upward

Loading

Merge Risk: 🟡 Moderate · up to 968ff

Repeated seeding of the same home fails partway through without producing a receipt. Make the machine name run-specific before merging; the screenshot harness otherwise uses a fresh temporary home.

🚥 Pre-merge checks | ✅ 3 | ❌ 2

❌ Failed checks (2 warnings)

Check name	Status	Explanation	Resolution
Linked Issues check	⚠️ Warning	Issue #367 requires a one-command, fixture-only harness for peer and machine A2A deliveries, silence/Crew notices, a spawn brief, a queued delivery, an open Crew proposal, and a Squadron-less new-task…	Add deterministic seed data, capture paths, and automated coverage for the missing #367 scenarios: Crew notices, spawn brief, queued delivery, open Crew proposal, and the Squadron-less new-task sheet. Ensure the one-command harness captures…
Docstring Coverage	⚠️ Warning	Docstring coverage is 37.50% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 8 functions across 3 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly identifies the mobile fixture-only J5 scene capture feature and its purpose for PR evidence.
Description check	✅ Passed	The description clearly explains the changes, motivation, UI evidence, verification results, limitations, and linked issue. It does not use the template's exact “Why” heading or include the checklist,…
Out of Scope Changes check	✅ Passed	The seed changes add the machine sender scenario required by #367. The test changes verify its identifiers, target thread, and cancelled provider start. The mobile script uses that seed, captures the …

Full details: Linked Issues check

Explanation

Issue #367 requires a one-command, fixture-only harness for peer and machine A2A deliveries, silence/Crew notices, a spawn brief, a queued delivery, an open Crew proposal, and a Squadron-less new-task sheet. This PR adds the command and seeds peer, machine, silence, human Inbox, raw-envelope, and MCP scenarios. The script captures only the receiver and sender threads. The diff does not add the required Crew notices, spawn brief, queued delivery, open Crew proposal, or Squadron-less new-task sheet. The test covers the new machine scenario, but it does not cover the missing scenarios.

Resolution

Add deterministic seed data, capture paths, and automated coverage for the missing #367 scenarios: Crew notices, spawn brief, queued delivery, open Crew proposal, and the Squadron-less new-task sheet. Ensure the one-command harness captures each required scene.

✨ Finishing Touches 💡 1

📝 Generate docstrings 💡

• Commit to this branch
• Create a new PR

🧪 Generate unit tests (beta)

• Commit to this branch
• Create a new PR

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Inline comments:
Review comments at @apps/server/src/j5/a2a/test-support/devDeliverySeed.ts:
- Line 737: Update the `seed-watchdog` machine name to include the seed’s
`runId`, so repeated runs use distinct names. Update the sender assertion in the
seed test to expect the run-specific name.

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📥 Commits

Reviewing files that changed from the base of the PR and between 2f8f359 and 968ff42.

📒 Files selected for processing (3)

• apps/server/src/j5/a2a/test-support/devDeliverySeed.test.ts
• apps/server/src/j5/a2a/test-support/devDeliverySeed.ts
• scripts/j5/mobile-scenes.sh

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[Jacksondr5]

Does upstream have something for this? Checked upstream issues, PRs, Discussions and code. Short answer: no. Upstream has no mobile E2E or UI-test framework (no Maestro, Detox or XCUITest) and no V2-aware fixture seeder.

• App Store showcase harness (scripts/mobile-showcase*): store-only, with fixed scenes and a fixed Metro port 8199. Its seeder still writes V1 projection_* rows, even on upstream's V2 branch (t3code/codex-turn-mapping), so it's stale there too and has no port in progress. Upstream once used it for PR before/after evidence as a one-off: throwaway t3bot/* branches for fix(mobile): use glass for pending cards pingdotgg/t3code#5466.
• feat(cli): add 't3 drive' interface for simulating every state in the app pingdotgg/t3code#10411 t3 drive (open, stalled, V1): loads a JSON scenario of commands through the real engine and serves it to a client. This is the closest idea to ours. If a V2 version ever lands, we should move our seeding onto its scenario format and keep this script's device paging and capture.
• chore(mobile): drive dev-menu suppression from the dev-client launch URL pingdotgg/t3code#12049 (open, do-not-merge): hides the dev-menu button through dev-client launch-URL flags (disableFab=1, disableAutoLaunch=1). If it lands, we should switch from writing simulator defaults with simctl to those flags.
• feat(dev): dev server pairing and seed utilities pingdotgg/t3code#4557 dev:seed: closed in favor of t3 pair plus VACUUM INTO snapshots. Upstream rejected a projection-copy seeder; ours goes through production services instead.
• test-t3-app's sqlite-fixtures.md still describes V1 tables, so it's wrong for V2 and we shouldn't follow it.

The script stays, and it reuses upstream's pair-client.sh and ensure rather than forking them. I'll watch pingdotgg#10411 and pingdotgg#12049.

Posted by an AI agent on Jackson's behalf.