fix(mobile): wrap Android source files when Word break is on

[siure]

Enabling Word break still clips long source lines on Android: current main selects the native canvas whenever it is available, even though it cannot wrap.

Use the JavaScript renderer when Word break is enabled and put the text inside a flexible View so Android wraps it correctly. Preserve pull-to-refresh and retry line jumps when wrapped rows have not been measured yet.

Replaces #6647, which was closed during the backlog sweep as already fixed. The fix is still missing from main; this branch is rebased onto current main.

Validation: the author confirmed wrapping works on their Android phone using a standalone APK with T3 Connect. Mobile typecheck and four focused source-file tests pass. The Android release build succeeded before the latest rebase; the source-viewer code is unchanged.

Before/after evidence from #6647:

Before: https://github.com/user-attachments/assets/acd9128e-f972-48a8-a773-985119fc44fe

Rebased and prepared with GPT-6 in Codex.

Summary by CodeRabbit

• New Features

  • Added pull-to-refresh support when viewing JavaScript source files.
  • Improved navigation to selected code lines by automatically retrying when scrolling initially fails.

• Bug Fixes

  • Improved code readability with more reliable word wrapping and line alignment.
  • Ensured files use the appropriate viewer when word wrapping is enabled, providing a more consistent viewing experience.

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ℹ️ Recent review info

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📥 Commits

Reviewing files that changed from the base of the PR and between 4664c57 and 0b490ec.

📒 Files selected for processing (1)

• apps/mobile/src/features/files/SourceFileSurface.tsx

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📝 Walkthrough

Walkthrough

The mobile source surface adds pull-to-refresh and scroll retry handling, updates highlighted-line layout, and routes word-break configurations to the JavaScript surface instead of the native surface.

Changes

Source surface behavior

Layer / File(s)	Summary
Highlighted line layout apps/mobile/src/features/files/SourceFileSurface.tsx	Highlighted lines use start alignment and width constraints that differ for word-break and non-word-break layouts.
Refresh and scroll handling apps/mobile/src/features/files/SourceFileSurface.tsx	The JavaScript surface supports pull-to-refresh and retries failed scrollToIndex operations up to five times.
Word-break surface selection apps/mobile/src/features/files/SourceFileSurface.tsx	The JavaScript surface is selected when codeWordBreak is enabled, even when a native surface exists.

Priority: ⬇️ Low — Defer this Android source-file rendering fix because it narrowly improves word wrapping, refresh, and scroll retries in the mobile code viewer.

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

Merge Risk: ⚪ Minimal · up to 0b490

Android source files with Word break enabled now use the wrapping JavaScript renderer, while refresh and line navigation behavior are retained. No concrete merge-blocking risk remains.

Sequence Diagram(s)

sequenceDiagram
  participant RefreshControl
  participant JavaScriptSourceFileSurface
  participant onRefresh
  RefreshControl->>JavaScriptSourceFileSurface: invoke handlePullToRefresh
  JavaScriptSourceFileSurface->>onRefresh: await refresh callback
  onRefresh-->>JavaScriptSourceFileSurface: resolve or reject
  JavaScriptSourceFileSurface-->>RefreshControl: update isPullRefreshing

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Suggested reviewers: juliusmarminge

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 3 functions across 1 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and concisely describes the main change: enabling wrapped Android source files when Word break is active.
Description check	✅ Passed	The description explains what changed, why it changed, validation performed, and the UI result with before/after evidence. It does not use the template headings or include the checklist, but the requi…
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.

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