docs: cut 1.7.4

[amosgeva]

Summary

Freezes ## [Unreleased] into ## [1.7.4] — 2026-09-10 with an intro and Upgrading notes (nothing to do; contributor amounts in the weekly report change where the week held sales or baseline-day trades), adds the footer link, and bumps server.json to 1.7.4 (version and the ghcr.io/amosgeva/portfoliodb:1.7.4 identifier).

Contents: round 4 of the audit remediation, PRs #104–#105 (N05 weekly contribution and week boundaries, N06 SQL integration tests in CI). No schema change and no migration.

After merge: tag v1.7.4, push the tag (publish workflow), gh release create.

🤖 Generated with Claude Code

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[codacy-production]

Up to standards ✅

🟢 Issues 0 issues

Results:
0 new issues

View in Codacy

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