docs/changes: v0.3.0 rolled up into CHANGELOG.md

[AbirAbbas]

What this is

make changelog VERSION=v0.3.0 on dev 4add9c9: the 95 loose entries under docs/changes/unreleased/ become the ## v0.3.0 — 2026-09-18 section of CHANGELOG.md, which the stable Release dispatch reads its notes from. Docs only. It must be the last commit merged before the promotion, or whatever lands after it is left out of v0.3.0's notes (that is how #1113 lost #1115).

What v0.3.0 carries

The crew family toggle and Pareto crewing (#1073, #1093, #1101), the Model Pool — setting, codeaf pool verb, judge, relay, seed index (#1093, #1102, #1127–#1169), named custom connections (#1089, #1107, #1195), the telemetry audit (#1111), the update door's download clock (#1110), the four-row wordmark (#1106), and the fixes that followed santos/dev onto dev (#1194, #1116).

The release road after this merges

# 1. full check on the roll-up commit, then staging (fast-forward)
gh workflow run ci-full.yml --ref dev            # confirm the run's headSha is the roll-up commit
git push origin <roll-up-sha>:staging
# 2. main (fast-forward) — publishes the next rc by itself (v0.2.2-rc.1: the rc line opens as a patch)
git push origin <roll-up-sha>:main               # cancel a double-delivered duplicate Release run if GitHub sends one
# 3. stable
gh workflow run release.yml --ref main -f channel=stable -f component=minor   # → v0.3.0, notes from this section

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