WIP: Populate linked venue on the gig feed (gig↔venue linkage)

[JoshuaVSherman]

Summary

WIP — rescued from orphaned working-tree changes; not finished. Parks the gig↔venue feed-populate work so it's tracked and durable (issue #244).

• Add a venueId (ObjectId, ref: 'Venue') field to the gig schema, plus a minimal Venue model so the ref resolves.
• Make gig find / findSort .populate() the linked venue's name/city/usState/website, so the SocketCluster gig feed carries live venue details.
• Bump version to 3.0.9.

Known-incomplete (remaining on #244, for the Sonnet lane):

• Lint is RED: 2 max-len errors in gig-facade.ts (the WIP's single-line try/catch bodies exceed 150 chars). Full npm test fails at eslint until fixed.
• Venue schema is missing a street address field that JaM#1242 (Gigs Location column) needs — add it and include it in the populate.
• No tests added for the new find/findSort overrides.
• Verify JaM#1220's render-time venue link actually consumes this feed shape in prod.

Closes #244

How to test locally

This is WIP — the suite is not fully green yet (lint red). Vitest unit tests pass; eslint does not.

Run the unit tests:

npm run test:unit

Expect: all unit tests pass (they do — see Test evidence).

Run the full gate (currently RED, by design until the lint fix on #244):

npm test

Expect: eslint reports 2 max-len errors in src/model/gig/gig-facade.ts.

Exercise the change (once finished): with a gig whose venueId points at a venues document, the gig model's find / findSort now return that gig with venueId populated as a subdocument carrying name, city, usState, website — instead of a bare ObjectId. Confirm by loading a linked gig through the gig controller and asserting the populated venue fields are present on the response.

Test evidence

 RUN  v4.1.9 /home/joshua/WebJamApps/WebJamSocketCluster

(node:27726) [MONGOOSE] Warning: mongoose: the `new` option for `findOneAndUpdate()` and `findOneAndReplace()` is deprecated. Use `returnDocument: 'after'` instead.
(Use `node --trace-warnings ...` to show where the warning was created)

 Test Files  9 passed (9)
      Tests  81 passed (81)
   Start at  04:22:49
   Duration  34.72s (transform 974ms, setup 0ms, import 2.90s, tests 38.12s, environment 1ms)

🤖 Work by Claude Code — Opus 4.8