feat(server): let packaged builds override the reported version

[TimeToBuildBob]

Server-side half of item 3 in ActivityWatch/aw-android#236.

Problem

GET /api/0/info reports the aw-server-rust package version:

version: format!("v{} (rust)", VERSION.unwrap_or("(unknown)")),

That's the version of a component, not of the product the user installed. On Android the webui footer shows v0.14.0 (rust) (aw-server-rust's Cargo.toml) while the installed app is v0.14.0b2.

Fix

Add version::set_version_override(), which packaged builds call at startup to report their own release version, and a JNI entrypoint setVersionOverride mirroring the existing setDataDir pattern so aw-android can pass BuildConfig.VERSION_NAME.

The override is used verbatim — the caller owns the exact format, including any v prefix. Behaviour with no override set is unchanged.

Verification

• cargo test -p aw-server --lib version — passes; covers the default (package version, still ends with (rust)), an override, and that a second override replaces the first verbatim.
• cargo fmt --check clean.
• cargo clippy -p aw-server --lib — no new warnings (existing ones are pre-existing in aw-transform/aw-datastore).

The JNI shim is #[cfg(target_os = "android")] so it isn't exercised by a host-target build; it will be covered by the aw-android submodule bump.

Follow-up

aw-android needs a matching PR to declare the external and call it from RustInterface, gated on this merging first (same sequencing as #653 → ActivityWatch/aw-android#237). I'll open it once this lands.

[greptile-apps]

Greptile Summary

The PR lets packaged builds override the version returned by /api/0/info while retaining the existing package-version fallback.

• Adds a process-wide version override and package-version fallback.
• Connects the info endpoint to the new version provider.
• Adds an Android JNI entry point for supplying the app release version.
• Restores the test override to its default state when the test exits.

Confidence Score: 5/5

The PR appears safe to merge.

No blocking failure remains.

Important Files Changed

Filename	Overview
aw-server/src/version.rs	Implements the override, fallback formatting, and test cleanup; the previously reported persistent test-state leak is fixed.
aw-server/src/android/mod.rs	Adds the Android JNI bridge that forwards the app-provided release version.
aw-server/src/endpoints/mod.rs	Uses the centralized version provider for the server information response.
aw-server/src/lib.rs	Exposes the new version module to the server crate.

_{Reviews (2): Last reviewed commit: "test(version): use Drop guard to reset g..." | Re-trigger Greptile}

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 78.33%. Comparing base (656f3c9) to head (9ac6d44).
⚠️ Report is 89 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #656      +/-   ##
==========================================
+ Coverage   70.81%   78.33%   +7.52%     
==========================================
  Files          51       66      +15     
  Lines        2916     5415    +2499     
==========================================
+ Hits         2065     4242    +2177     
- Misses        851     1173     +322     

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[TimeToBuildBob]

@greptileai review

[TimeToBuildBob]

CI-green and mergeable (Greptile 5/5) — waiting only on a maintainer click.

This PR is ready to merge, but the bot has pull-only access to this repo and can't self-merge — surfacing it here so it isn't lost. The monitoring loop will stop re-flagging it now that this note is posted.