docs: research IDX news and disclosures, propose a published feed

MSN has no company news for many tickers; IDX's disclosures cover every
issuer. idx.co.id is behind a Cloudflare challenge that plain curl and
curl-impersonate fail from the maintainer host, while the local Camofox
browser gets through. Record the working endpoints (per-issuer and
all-issuer disclosures, exchange news), their shapes and quirks, the
options, and a proposed design: a maintainer publisher writes static JSON
to a GitHub release, as the ownership snapshot does, and idx-core merges
it into news.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01V3syn2fN2LNo5pvTSqc6eh
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hermes 2026-10-16 08:45:34 +00:00
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@ -33,6 +33,7 @@ Docs:
- `docs/OWNERSHIP_SYNC.md` / `docs/OWNERSHIP_PUBLISH.md`: snapshot consumer contract / maintainer publishing
- `docs/SMOKE.md`: Nix checks, test layout, and the live drift check
- `docs/DESIGN.md`: idx-core / idx-mcp design and parity gates
- `docs/IDX_NEWS.md`: IDX news and disclosures research, proposed publisher design
- `ROADMAP.md`: open work
## Rules