refactor: clean tracked agent artifacts

[lbliii]

Summary

• stop tracking local Dori event/log data and the generated type-baseline snapshot
• ignore generated/local Cursor, Dori, and type-report artifacts while keeping project-owned Cursor skills trackable
• document ownership and maintenance expectations for the retained Cursor skills and intentional Context7 registration

Closes #135.

Verification

• make lint
• make ty
• git diff --check
• verified removed files still exist locally and match the new ignore rules
• verified project skill files are not ignored while arbitrary .cursor workspace state is ignored

Steward Notes

• Consulted: root repository constitution (repository hygiene and collateral expectations)
• Risk: an ignore rule could hide project-owned agent guidance; explicit negations retain README.md and per-skill SKILL.md files
• Evidence: context7.json was introduced deliberately as the public Kida Context7 integration; the removed type baseline is a stale generated audit and Dori paths were already declared ephemeral
• No collateral: runtime, public API, docs output, examples, schemas, and tests are unaffected because this changes repository metadata and removes local/generated state only

[Copilot]

Pull request overview

This PR improves repository hygiene by removing tracked, local/generated agent artifacts (Dori logs/events and a type-check baseline snapshot) and strengthening ignore rules so those artifacts don’t get reintroduced, while explicitly retaining project-owned Cursor skill docs.

Changes:

• Stop tracking local Dori event/log files and the generated reports/type-baseline.md.
• Tighten .gitignore to ignore Cursor workspace state and generated audit output while explicitly un-ignoring project-owned Cursor skills (README.md + per-skill SKILL.md).
• Add .cursor/skills/README.md documenting ownership/maintenance expectations for the retained Cursor skills and the intentional context7.json.

Reviewed changes

Copilot reviewed 5 out of 6 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
reports/type-baseline.md	Removes a generated type-report snapshot from version control.
.gitignore	Adds ignore rules for Cursor workspace artifacts and reports/type-baseline.md, with negations to keep project-owned skill docs tracked.
.dori/local/logs/2026-02-06.jsonl	Removes tracked local Dori logs (ephemeral).
.dori/local/logs/2026-02-07.jsonl	Removes tracked local Dori logs (ephemeral).
.dori/events/d17d7bd0.json	Removes tracked local Dori event data (ephemeral).
.cursor/skills/README.md	Documents that Cursor skills under .cursor/skills/*/SKILL.md are project-owned and should be maintained.