Document lint warning recommendations and add follow-up issue proposal series

[Copilot]

Summary

Reviewed current ESLint warnings, documented a recommendation per warning rule, and added a proposal series under .github/issue-proposals/ so CI can create follow-up issues that collectively address all warning categories.

Original Prompt

Review lint warnings and make a recommendation for each rule:

1. Disable it.
2. Fix violations.
3. Selectively fix or ignore violations.

Manual acceptance tests

• Run yarn lint and verify warnings are still grouped under 8 rule IDs.
• Open docs/development/lint-warning-recommendations.md and verify each warning rule has one explicit recommendation (disable / fix / selectively fix-or-ignore).
• Confirm .github/issue-proposals/ contains one new proposal file per warning rule category with valid front matter and non-empty body.
• Confirm each new proposal includes parentIssue: 1901 and an acceptance-criteria checklist.

Tasks

• Baseline warning inventory
  • Collected current lint warnings and grouped by rule ID/count.
• Recommendation mapping
  • Classified each rule into one of: disable, fix, selectively fix-or-ignore.
  • Added concise rationale tied to current warning patterns.
• Documentation
  • Added /docs/development/lint-warning-recommendations.md as the canonical recommendation artifact.
  • Added a short priority order for follow-up implementation.
• Issue proposal follow-up from PR feedback
  • Added a series of issue proposals under .github/issue-proposals/ covering all warning rule categories.
  • Used required YAML front matter and linked proposals to parentIssue: 1901.
  • Cleaned formatting so proposal files pass automated review checks.

[pmcelhaney]

Create a series of issues that will collectively address all of the warnings.

[Copilot]

Create a series of issues that will collectively address all of the warnings.

Added a full issue-proposal series under .github/issue-proposals/, covering all lint warning rules with parent linkage to #1901 and acceptance checklists. Main commit: 01dea73 (formatting cleanup in 531fa1e).