feat: JS/TS workspace resolution + alias fixtures, findings, docs (re-land 2/3 + 3/3)

[NehharShah]

What

Re-lands the already-reviewed content of #35 (workspace package-name resolution) and #36 (fixtures + unresolved-alias uncertainty note + findings/README) onto main.

Why

Resolves #3

#35 and #36 were merged into their stacked base branches (issue-3/tsconfig-paths-resolution and issue-3/workspace-name-resolution) rather than main — GitHub doesn't retarget stacked PRs when the base merges. Main currently carries only PR 1/3 (#34). This PR cherry-picks the two squash commits; the resulting tree is byte-identical (git diff empty) to the reviewed head of the stack.

Testing

• Full suite on the re-landed tree: 80 tests, all green
• git diff origin/issue-3/workspace-name-resolution HEAD is empty — exactly what was approved in feat: JS/TS alias fixtures + unresolved-alias uncertainty note + docs (3/3) #36

Checklist

• Branch is named issue-<N>/<short-description>
• Zero new runtime dependencies (stdlib only)
• Heuristics register findings with confidence + evidence
• New artifacts are reversed by repokg clean
• Tests added/updated and python -m unittest discover -s tests passes