CMM-2304: Detect Jetpack status on the application-password path

[nbradbury]

Description

TL/DR: Sites added with an application password never get their Jetpack flags detected, so the Jetpack app shows "Install Jetpack" when tapping Stats on a site that already has it. This PR adds detection to the WPAPI fetch path in fluxc.

---

During the site fetch, the jetpack/ REST namespace is used as a cheap negative filter, then wp/v2/plugins confirms the actual Jetpack plugin (the namespace alone also comes from Boost/Protect/Social), and jetpack/v4/connection (via wordpress-rs) supplies the connection state and WP.com blog id. Anything that can't be determined — e.g. a non-admin application password can't list plugins — is carried forward from the stored row, never flipped. SiteStore also stops discarding the whole update when the discovered blog id collides with an existing WP.com copy of the same site, and refreshes from the stored row so a stale in-memory model can't undo previous writes.

No app-module changes: once the flags are real, the existing stats gate routes correctly. The WordPress app's Jetpack-removal overlay false positive (Bug 2 in the Linear issue) is a separate follow-up PR.

Fixes Bug 1 of https://linear.app/a8c/issue/CMM-2304/

Testing instructions

Jetpack app, site with Jetpack connected:

1. Add a self-hosted site with Jetpack installed and connected via site address + application password (admin user, not signed into WP.com).
2. Cold-start the app, then tap Stats from My Site (tap it more than once).

• Signed out: a WP.com login prompt appears instead of the "Install Jetpack" screen.
• Signed in with the connected account: Stats opens.

Site without Jetpack:

1. Add a self-hosted site with no Jetpack plugin via application password.
2. Cold-start and tap Stats.

• The Connect Jetpack screen still appears (unchanged behavior).

[dangermattic]

	3 Warnings
⚠️	This PR is larger than 300 lines of changes. Please consider splitting it into smaller PRs for easier and faster reviews.
⚠️	Class JetpackConnectionStatusFetcher is missing tests, but unit-tests-exemption label was set to ignore this.
⚠️	PR is not assigned to a milestone.

Generated by 🚫 Danger

[wpmobilebot]

📲 You can test the changes from this Pull Request in Jetpack Android by scanning the QR code below to install the corresponding build.

	App Name	Jetpack Android
	Build Type	Debug
	Version	pr23262-a3bc5d0
	Build Number	1498
	Application ID	com.jetpack.android.prealpha
	Commit	a3bc5d0
	Installation URL	3gloabr109rl0

Automatticians: You can use our internal self-serve MC tool to give yourself access to those builds if needed.

[wpmobilebot]

📲 You can test the changes from this Pull Request in WordPress Android by scanning the QR code below to install the corresponding build.

	App Name	WordPress Android
	Build Type	Debug
	Version	pr23262-a3bc5d0
	Build Number	1498
	Application ID	org.wordpress.android.prealpha
	Commit	a3bc5d0
	Installation URL	1rrfhv5gll2d0

Automatticians: You can use our internal self-serve MC tool to give yourself access to those builds if needed.

[codecov]

Codecov Report

❌ Patch coverage is 8.98876% with 81 lines in your changes missing coverage. Please review.
✅ Project coverage is 37.80%. Comparing base (b9bfaf6) to head (a3bc5d0).
⚠️ Report is 1 commits behind head on trunk.

Files with missing lines	Patch %	Lines
...uxc/network/rest/wpapi/site/SiteWPAPIRestClient.kt	0.00%	50 Missing ⚠️
...st/wpapi/jetpack/JetpackConnectionStatusFetcher.kt	0.00%	22 Missing ⚠️
...ava/org/wordpress/android/fluxc/store/SiteStore.kt	40.00%	4 Missing and 5 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##            trunk   #23262      +/-   ##
==========================================
- Coverage   37.82%   37.80%   -0.03%     
==========================================
  Files        2347     2348       +1     
  Lines      128362   128445      +83     
  Branches    17774    17805      +31     
==========================================
+ Hits        48555    48560       +5     
- Misses      75851    75925      +74     
- Partials     3956     3960       +4     

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[adalpari]

Could you double check this is intended?

1. Absent namespaces is treated the same as “Jetpack not installed” — can wipe a live connection ⚠️ (highest confidence)
   SiteWPAPIRestClient.kt:163

val hasJetpackNamespace = namespaces?.any { it.startsWith(JETPACK_API_NAMESPACE_PREFIX) } ?: false
if (!hasJetpackNamespace) return JetpackPluginState(isActive = false, version = null)
namespaces == null (Success with empty/malformed body, or an altered REST index) yields a definitive isActive = false. In applyJetpackState (:248) that hits plugin != null && !plugin.isActive, calling setIsJetpackConnected(false) and siteId = 0 — regressing the exact state this PR establishes and re-triggering the “Install Jetpack” screen. The reliable-negative reasoning holds when namespaces is present but lacks jetpack/; it doesn’t hold when the field is absent. Consider distinguishing null (→ carry forward) from present-without-jetpack (→ definitive false).

And I think this one is worth a shot too.

2. storedWPAPISite only tries both URL schemes when the input is scheme-less
   SiteStore.kt:1472 — if payload.url has a wrong-but-present scheme (http:// when the row was stored https://), only one lookup runs and the stored row is missed, so previousSite is null and the local id / jetpack carry-forward is lost.

[adalpari]

This is a great fix and it works as expected!!

I just left a couple of comments and another addition:

• When asked to log into WP.COM account after trying to open stats, I'm being redirected to MySite screen. Would it be possible to be redirected ti stats directly?

[nbradbury]

@adalpari Both of those are good catches - fixed in 531d316.