wah

## Motivation

Fixes #1918. Downloaded model status reverts from "completed" to
"pending" during each download scan. Reproduced with `zai-org/GLM-5.1`.

## Changes

- `coordinator.py`: In the periodic rescan, don't downgrade
already-completed models; fall back to `resolve_existing_model()`
(safetensors weight check) when per-file size check reports incomplete
- New `test_download_status_not_lost.py`: 3 regression tests

## Why It Works

The rescan compares local file sizes against HF's `main` revision. When
HF updates text files (README, jinja, etc.), remote sizes change but
local files still match the old revision — causing a false "incomplete".
The fix uses the safetensors weight check as ground truth instead.

Long-term: pin the downloaded revision SHA rather than always checking
against `main`.

## Test Plan

### Manual Testing

- Mac Studio M3 Ultra with GLM-5.1 downloaded (natural reproduction of
the issue)
- Confirmed GLM-5.1 stays `DownloadCompleted` through multiple rescan
cycles

### Automated Testing

- 3 new tests: completed-not-downgraded, fallback-to-resolve,
genuinely-incomplete-stays-pending

.github/workflows/build-app.yml

@@ -32,6 +32,7 @@ jobs:
       SPARKLE_ED25519_PRIVATE: ${{ secrets.SPARKLE_ED25519_PRIVATE }}
       SPARKLE_S3_BUCKET: ${{ secrets.SPARKLE_S3_BUCKET }}
       SPARKLE_S3_PREFIX: ${{ secrets.SPARKLE_S3_PREFIX }}
+      EXO_BUG_REPORT_PRESIGNED_URL_ENDPOINT: ${{ secrets.EXO_BUG_REPORT_PRESIGNED_URL_ENDPOINT }}
       AWS_REGION: ${{ secrets.AWS_REGION }}
       EXO_BUILD_NUMBER: ${{ github.run_number }}
       EXO_LIBP2P_NAMESPACE: ${{ github.ref_name }}
@@ -346,6 +347,7 @@ jobs:
             EXO_BUILD_COMMIT="$GITHUB_SHA" \
             SPARKLE_FEED_URL="$SPARKLE_FEED_URL" \
             SPARKLE_ED25519_PUBLIC="$SPARKLE_ED25519_PUBLIC" \
+            EXO_BUG_REPORT_PRESIGNED_URL_ENDPOINT="$EXO_BUG_REPORT_PRESIGNED_URL_ENDPOINT" \
             CODE_SIGNING_IDENTITY="$SIGNING_IDENTITY" \
             CODE_SIGN_INJECT_BASE_ENTITLEMENTS=YES
           mkdir -p ../../output

.gitignore

@@ -18,6 +18,7 @@ digest.txt
 app/EXO/build/
 dist/
 
+
 # rust
 target/
 **/*.rs.bk
@@ -39,5 +40,3 @@ bench/**/*.json
 tmp/models
 /build/exo
 /.claude/skills
-/.claude
-/.codex

.idea/misc.xml

@@ -4,7 +4,4 @@
     <option name="sdkName" value="Python 3.13 (exo)" />
   </component>
   <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.13 (exo)" project-jdk-type="Python SDK" />
-  <component name="RuffConfiguration">
-    <option name="enabled" value="true" />
-  </component>
 </project>