feat: add x.com status video subtitles

[ringoshiina]

Summary

• add subtitle translation support for x.com/twitter.com status videos with platform captions
• add x.com status route detection, overlay mounting, video/container selection, HLS/WebVTT caption discovery, and subtitle cleanup on route changes
• harden the shared video subtitle adapter against stale async work during navigation, disable/re-enable, source track refresh, and route exit
• add focused regression coverage for x.com caption parsing, route rebinding, stale subtitle work, and panel placement

Verification

• pnpm exec vitest run src/entrypoints/subtitles.content src/utils/subtitles
• pnpm exec eslint $(git status --short --untracked-files=all | awk '{print $2}' | grep -E '\\.(ts|tsx)$')
• pnpm exec tsc --noEmit --pretty false
• git diff --check
• WXT_SKIP_ENV_VALIDATION=true pnpm build
• pre-push hook: lint, type-check, and full extension test suite (169 test files / 1394 tests)

Manual verification

• Reloaded the unpacked Chrome extension from .output/chrome-mv3
• Verified x.com status video subtitle flow works as expected
• Opened a clean YouTube watch tab and confirmed the Read Frog subtitle button still mounts inside YouTube controls without console errors

[changeset-bot]

🦋 Changeset detected

Latest commit: b44d3c5

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@read-frog/extension	Patch

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[github-actions]

Contributor trust score

32/100 — Moderate

This score estimates contributor familiarity with mengxi-ream/read-frog using public GitHub signals. It is advisory only and does not block merges automatically.

Outcome

• PR: feat: add x.com status video subtitles #1725 — feat: add x.com status video subtitles
• Author: @ringoshiina
• Trust label: contrib-trust:moderate
• Maintainer review: not required
• Override label: add trust-check:skip to stop future trust automation updates

Score breakdown

Dimension	Score	Signals
Repo familiarity	14/35	commits in repo, merged PRs, reviews
Community standing	6/25	account age, followers, repo role
OSS influence	3/20	stars on owned non-fork repositories
PR track record	9/20	merge rate across resolved PRs in this repo

Signals used

• Repo commits: 3 (author commits reachable from the repository default branch)
• Repo PR history: merged 3, open 3, closed-unmerged 2
• Repo reviews: 0
• PR changed lines: 2875 (+2801 / -74)
• Repo permission: read
• Followers: 1
• Account age: 95 months
• Owned non-fork repos considered: max 1, total 1 (ringoshiina/learn-quiz-skill (1), ringoshiina/shadowrocket-backcn-rules (0), ringoshiina/QuickShot_v2 (0))

Policy

• Low-score review threshold: < 30
• Auto-close: score < 20 and changed lines > 1000
• Policy version: v1.1

Updated automatically when the PR changes or when a maintainer reruns the workflow.

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Hide showing x.com TextTracks while rendering subtitles

When the user has X's captions enabled before clicking Read Frog, the first ordered track is mode === "showing", but this branch only changes disabled tracks to hidden and leaves showing tracks rendering natively while Read Frog renders its translated/bilingual subtitles. The x.com nativeSubtitles selector is a data-read-frog-* attribute that the repo never applies, so hideNativeSubtitles() cannot suppress those browser TextTrack cues; users in that scenario get duplicated/overlapping captions until they manually turn X captions off.

Useful? React with 👍 / 👎.