feat(media): add more life and diversity in alternative media coverage

[Vincent-LAMBERT]

Approved issue

Closes #195

• The linked issue has status:approved.
• This PR targets development unless it is a maintainer release/hotfix PR.
• This PR has exactly one type:* label.

Summary

• Added a streamer comment and a rumour section (5% chances per day) in mods.js to replace and diversify the Al Lio and el_yuste messages
• Adapted the media story message to take into account broadcasts and podcasts the day after they air.
• Commented the choices about the build_media_story_from_narrative function previously left unfinished and uncommented
• Messages received come in priority from the language of the manager or the player language if a comment is centered on him. If none is available, it then comes from english medias
• Broadcast and podcast medias added for english, spanish and french (no specific media mentioned by contacted people from other languages so default to english)
• Streamer messages added for every language in OLM
• Functional translation for every other language in OLM (with DeepL from english and manual check for french)

Checks run

Required/stable PR checks are intentionally lightweight and production-build-free:

• frontend-install passed (dependency installation validation).
• rust-check passed (cargo fmt --check and cargo check).
• Not applicable locally; docs/templates only.

Manual/experimental full checks are available for maintainer-requested validation and current debt tracking:

• frontend-full-experimental (npm test, npm run build:types).
• rust-full-experimental (cargo clippy --workspace --all-targets -- -D warnings, cargo test --workspace).

Do not mark the experimental full checks as required for this PR unless a maintainer explicitly asks.

Documentation and provenance

• Documentation was updated or no docs change is needed.
• Data provenance was updated or no provenance change is needed.
• No unclear third-party data, generated cache, secret, signing key, or private credential is included.

Release impact

• Changelog entry added or not needed.
• Version changes are synchronized across package.json, src-tauri/Cargo.toml, and src-tauri/tauri.conf.json when applicable.

[Vincent-LAMBERT]

Seems like other PR impacted this one with new conflicts. I don't want to erase other people's work so I am supposed to change my code to integrate the new diversity of content that had been added or keep my code untouched and let the maintainer handle the issue ?

[NicoRuedaA]

@Vincent-LAMBERT check the merge conflicts :)