[RSM] Support generated chapters

[sztomek]

Description

This PR is part of the Radical Speed Month initiative.
It builds upon our previous work with AI summaries for episodes.
Adds support for AI-generated chapters -- when an episode doesn't have curated chapters but has the server-generated meta file (that contains both summary and chapters), we will grab those chapters and store them in our database.
This PR also introduces EpisodeMetaResponse that is a DTO to map the meta file's JSON format and we use Moshi to parse the file's content.

Testing Instructions

1. Open an episode that doesn't have chapters, but has generated transcripts (e.g. The American Life)
2. Notice that Chapters tab is available
3. Interact with chapters

Screenshots or Screencast

Checklist

• If this is a user-facing change, I have added an entry in CHANGELOG.md
• Ensure the linter passes (./gradlew spotlessApply to automatically apply formatting/linting)
• I have considered whether it makes sense to add tests for my changes
• All strings that need to be localized are in modules/services/localization/src/main/res/values/strings.xml
• Any jetpack compose components I added or changed are covered by compose previews
• I have updated (or requested that someone edit) the spreadsheet to reflect any new or changed analytics.

[Copilot]

Pull request overview

Note

Copilot was unable to run its full agentic suite in this review.

Adds support for persisting AI-generated chapters from the server “-meta.json” transcript metadata when curated chapters are missing, using a Moshi DTO for parsing.

Changes:

• Parse transcript meta JSON into a new EpisodeMetaResponse DTO via Moshi.
• Extend TranscriptManagerImpl.loadSummaryText to opportunistically save AI chapters when no existing chapters are present.
• Add unit tests covering chapter persistence / skipping behavior and meta JSON permutations.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 4 comments.

File	Description
modules/services/repositories/src/main/java/au/com/shiftyjelly/pocketcasts/repositories/transcript/TranscriptManagerImpl.kt	Parses meta JSON with Moshi and saves AI chapters when appropriate.
modules/services/repositories/src/main/java/au/com/shiftyjelly/pocketcasts/repositories/transcript/EpisodeMetaResponse.kt	New Moshi DTO for meta JSON (summary, chapters).
modules/services/repositories/src/test/java/au/com/shiftyjelly/pocketcasts/repositories/transcript/TranscriptManagerTest.kt	Adds coverage for saving/skipping AI chapters from meta JSON.
modules/services/repositories/build.gradle.kts	Enables Moshi codegen via KSP for @JsonClass(generateAdapter = true).

[CookieyedCodes]

I would suggest an icon is used to inform people these are AI chapters, also maby limit the number of chapters go 10 per hour 🤔🤔

[wpmobilebot]

Version 8.12 has now entered code-freeze, so the milestone of this PR has been updated to 8.13.

[sztomek]

@CookieyedCodes Great suggestions! We've added a text disclaimer that appears above the chapters list when they're AI-generated to set user expectations. An icon indicator and chapter density limits are good ideas for a future iteration — keeping them out of this PR's scope for now.

[Copilot]

Pull request overview

Copilot reviewed 14 out of 14 changed files in this pull request and generated 2 comments.

Comments suppressed due to low confidence (1)

modules/services/utils/src/main/java/au/com/shiftyjelly/pocketcasts/utils/featureflag/Feature.kt:274

• PR description is focused on AI-generated chapters, but this diff also introduces a new BLOGS feature flag and substantial Blogs-related UI/networking changes. Please update the PR description/scope (or split into a separate PR) so reviewers and release notes can track these independently.

    GENERATED_CHAPTERS(
        key = "generated_chapters",
        title = "AI-Generated Chapters",
        defaultValue = isDebugOrPrototypeBuild,
        tier = FeatureTier.Free,
        hasFirebaseRemoteFlag = true,
        hasDevToggle = true,
    ),
    AI_SUMMARIES(
        key = "ai_summaries",
        title = "AI Summaries",
        defaultValue = isDebugOrPrototypeBuild,
        tier = FeatureTier.Free,
        hasFirebaseRemoteFlag = true,
        hasDevToggle = true,
    ),

[sztomek]

Added an explanatory text to the screen

[CookieyedCodes]

Can I suggest something, if rss time tags are detected in the show notes, it might be nice that those are generated as chapters over AI generated transcripts chapters 🤔🤔