docs(e2e): add the Compose desktop app as a third app plane

[jamesarich]

CMP 1.12 ships an MCP server inside Compose Hot Reload, so Meshtastic-Android's :desktopApp can now be driven the same way the Android and Apple planes already are — no rebuild between assertions.

Adds to meshtastic-e2e:

• a App — Desktop row in the plane table (click/type_text/scroll as stimulus, get_semantic_tree/get_logs/get_ui_error as oracle)
• a Desktop app topology row
• a short section: poll status until connected, use the semantic tree as the oracle rather than take_screenshot, address nodes by nodeId, reload to re-assert after a source edit

Device plane is unchanged — same radios, same recorder, same mesh_e2e.py.

Registration of the server lives in Meshtastic-Android (meshtastic/Meshtastic-Android#6943).

Summary by CodeRabbit

• Documentation
  • Added guidance for testing the Compose desktop app through the Compose Hot Reload MCP server.
  • Documented desktop-app setup, connection checks, semantic-tree inspection, logging, UI error checks, and reload behavior.
  • Updated the testing topology and interaction/oracle reference tables to include the desktop app plane.

[coderabbitai]

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• src/meshtastic_mcp/skills/meshtastic-e2e/SKILL.md

📝 Walkthrough

Walkthrough

The E2E skill now documents the Compose desktop app as a supported plane. It describes the Hot Reload MCP server, desktop topology, interaction tools, semantic-tree oracle, connection checks, startup, and reload workflow.

Changes

Desktop app E2E workflow

Layer / File(s)	Summary
Document the desktop app plane src/meshtastic_mcp/skills/meshtastic-e2e/SKILL.md	The skill adds the Compose desktop app to the supported planes and topology. It documents click, type_text, scroll, get_semantic_tree, get_logs, and get_ui_error. It also documents hotRun, connection polling, semantic-tree validation, and reload/await_reload.

Estimated code review effort: 1 (Trivial) | ~3 minutes

Merge Risk: 🟡 Moderate · up to e0a5a

The PR adds desktop-plane guidance, but the documented bootstrap still applies Android-only prerequisites to desktop runs, so users following the new instructions cannot complete setup. Merge should wait for the prerequisites to be scoped per plane; the remaining summary and version wording issues are minor documentation corrections.

Poem

A rabbit taps the desktop pane
With semantic trees in a neat little chain
Hot reload hops, logs softly glow
The mesh stays ready as changes flow
nodeId guides each careful click
And every test runs smooth and quick

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the main change: adding the Compose desktop app as a third application plane to the end-to-end skill documentation.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

Full details: Docstring Coverage

Explanation

No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0 files. (1 skipped: 1 unsupported.)

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Actionable comments posted: 3

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Inline comments:
In `@src/meshtastic_mcp/skills/meshtastic-e2e/SKILL.md`:
- Line 4: Update the app-plane summary in the Meshtastic end-to-end skill
documentation to list the Compose Hot Reload MCP driver alongside the Android
and Apple app drivers, while preserving the existing description of the
cross-plane testing flow.
- Around line 88-105: The prerequisites section must distinguish Android and
desktop execution: mark adb, installed-package, and adb devices checks as
Android-only, and add desktop bootstrap instructions to start ./gradlew
:desktopApp:hotRun and poll the Compose Hot Reload MCP status until connected is
true before making other calls.
- Line 90: Update the prerequisite wording near the Meshtastic-Android MCP
configuration to identify CMP 1.12+ as a Meshtastic-Android-specific
requirement, not a general MCP prerequisite. State that Meshtastic-Android
currently requires CMP 1.12+ and preserve the surrounding .mcp.json context.

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[jamesarich]

All three addressed in f9a7fe7.

Prerequisites: made the app row plane-aware rather than adding a parallel desktop bootstrap block - the hotRun command and the status-until-connected rule are already 15 lines up in the desktop section, and the existing bootstrap was never Apple-specific either.

CMP floor: reworded to attribute 1.12 to what bundles the MCP-capable Hot Reload, and noted Meshtastic-Android is on 1.12.0. kotlinlang.org states the 1.12.0 requirement directly - https://kotlinlang.org/docs/multiplatform/compose-hot-reload.html - so I kept the version, just not as a general MCP prerequisite.