Authored by GPT-5.5 (Codex Desktop). Session 720fc09a-e8ff-467d-b039-28120312964d.

Resolves #12793 Related: #12696 Related: #12791

Adds a full v13 release-note section, The Identity Layer: Same Model Stopped Meaning Same Agent, to frame durable AgentIdentity + Memory Core continuity as digital identity infrastructure rather than persona prompting.

Evidence: L1 (static release-note diff, source-link inclusion, private-path/client-name sweep, markdown whitespace checks) -> L1 required (documentation-only release-note surface). No residuals.

Deltas from ticket

• Implements the public framing directly in resources/content/release-notes/v13.0.0.md.
• Elevates the point from a compact aside to a full release-note moat beat, per operator correction that own digital identity and emergent operating character were being undersold.
• Adds public external research anchors: autonomous-agent memory, governed collaborative memory, decentralized memory preserving agent diversity, persistent autonomy/personality, and emergent agent individuality.
• Uses public-safe internal quotes from the operator-provided screenshots while avoiding local screenshot paths, private filenames, client names, and sentience/consciousness claims.

Test Evidence

• git diff --check
• git diff --cached --check
• Pre-commit hook passed: node ./buildScripts/util/check-whitespace.mjs
• rg -n "/Users|the tenant|confidential|Screenshot|private repo|client name" resources/content/release-notes/v13.0.0.md returned no matches.
• git log origin/dev..HEAD --format=%H%n%s%n%b confirmed the branch history contains only docs(release): add identity infrastructure moat (#12793) with no stale parent-epic close keyword.

Post-Merge Validation

• Confirm the final v13 release-note pass still preserves this section's external source links and does not duplicate the identity argument elsewhere.
• Confirm cross-family review agrees that the section claims substrate-enabled operating character without overclaiming sentience, consciousness, or assigned mascot personas.