Allow includeTranscript in all modes

[skuzi]

Summary

Makes the includeTranscript config flag work in any mode, not just audio.

Previously the expected/submitted transcript was written only in audio mode (in AudioGame.submit()). This moves the logic into the shared completion flow so a classic task (e.g. the Long Form email) can also opt in and give the grader the real transcription to compare.

• completion.js: new saveCompletionStats() saves the numeric stats and, when config.includeTranscript is set, appends the Expected (reference) and Submitted (typed) transcriptions to stats.txt. It's layered on top of the shared serializer (read-back + re-post), so stats.js stays untouched.
• audio-game.js: reverts to simply triggering showCompletionScreen() — no audio-specific transcript save.
• Transcript = state.originalText (expected) + state.typedText (submitted), both mode-agnostic.

The transcripts are inserted before the Generated: line in stats.txt; the base task's extract_solution.py surfaces them in STDOUT for the grader.

Testing

• npm run build passes.
• Classic mode (allowMistakes + includeTranscript): typed "The quick brown fix." vs "The quick brown fox." → stats.txt contains the stats and both transcriptions. Audio mode uses the same shared path. No new console errors.

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Review details

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: e0fcae37-ef45-4530-af44-0045c48f7b08

📥 Commits

Reviewing files that changed from the base of the PR and between a3aa18b and 42ef352.

📒 Files selected for processing (1)

• client/completion.js

📝 Walkthrough

Walkthrough

The completion flow now saves statistics through saveCompletionStats, optionally appends expected and submitted transcriptions to stats.txt, and persists the updated text. showCompletionScreen waits for this saving flow before continuing. AudioGame.submit() no longer performs mode-specific transcript handling and directly invokes the completion screen. Documentation now describes includeTranscript as applying to all game modes.

Possibly related PRs

• CodeSignal/learn_typing-simulator-game#2: Modifies the audio game’s submit behavior.
• CodeSignal/learn_typing-simulator-game#4: Changes includeTranscript handling in the audio completion flow.

Suggested reviewers: diegochine

🚥 Pre-merge checks | ✅ 4

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly captures the main change: enabling includeTranscript across all modes.
Description check	✅ Passed	The description is directly related to the changeset and accurately describes the transcript-saving refactor.
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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Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@client/completion.js`:
- Around line 21-23: Update the fetch flow in the completion logic before
reading the response body to validate the returned response’s ok status. If the
request for stats.txt is unsuccessful, handle it as an error and do not append
transcripts or write the resulting content back to the stats file; preserve the
existing processing for successful responses.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 2be949fe-86ab-463b-85d2-4d4aecba0095

📥 Commits

Reviewing files that changed from the base of the PR and between 3c49ae1 and a3aa18b.

📒 Files selected for processing (4)

• AGENTS.md
• README.md
• client/completion.js
• client/games/audio-game.js