[NaNIsaac]

Add ten stable findings in docs/FINDINGS.md and link the latest three from README. Each finding records its question, result, evidence, status and limits; checked status refers to verification already documented in the cited reports. Existing results and numerical code are unchanged.

Validation:

• Link/schema script: 73 local links, 7 Markdown anchors, 10 finding records checked; 0 errors.
• Compared headline numbers and qualifications with the cited reports and review records.
• git diff --check: passed.
• uvx ruff@0.17.1 check: passed; format --check: 127 files already formatted.
• Global conventions command returned 0 findings, but does not cover this research worktree. Direct worktree check reports 7 existing findings: CI concurrency/macOS configuration, earlier commit subjects, numbered comments and banner comments. No related files are changed here.
• GitHub Markdown API rendered the findings, but returned no heading IDs; actual GitHub page anchors remain unverified. The local anchor check passed.
• Numerical experiments, pytest, README installation and physical systems were not run for this documentation-only change.

local-ci: 2cc3a46 | links/schema, report comparison, diff and Ruff passed; existing conventions findings recorded | pytest, numerical reruns, README installation and browser verification not run