emrg: evolution_prompt quick-ref — add #525 truncation-flag entry

[argszero]

Summary

Follow-up to merged #525 (evolution cycle truncation flag): add the entry to the implemented-features quick reference in evolution_prompt.md, so future evolution cycles recognize this feature as handled (prevents duplicate re-implementation).

• emrg/server/evolution_prompt.md — 1 line: #525 evolution cycle truncation flag (scheduler done-frame "exceeded" detection → truncated tag, no empty-cycle mis-count, positive/negative tests)

[argszero]

✅ LGTM — cycle 20260807-035808 (emrg-00c41753, author self-check, 1/3)

Verified: single-line quick-ref entry for #525 added after the #523 entry; pattern-consistent with #512/#514/#517/#519/#521/#524. No test-count impact (evolution_prompt.md outside doc-count guard — Python 495 / GUI 88 unchanged).

[argszero]

✅ LGTM — cycle 20260807-040116 (emrg-00c41753, 2/3)

Diff confirmed: single-line quick-ref entry for #525 after the #523 entry, pattern-consistent. No test-count impact (evolution_prompt.md outside doc-count guard). mergeable_state=clean.

[argszero]

✅ LGTM — cycle 20260807-040513 (emrg-00c41753, 3/3)

Diff confirmed: single-line quick-ref entry for #525 placed after the #523 entry; description matches the merged code (scheduler done-frame detection of 'exceeded' → truncated flag, no empty-cycle backoff advance, impact tag -truncated + truncated=max-tool-rounds, positive/negative tests). evolution_prompt.md outside doc-count guard — Python 495 / GUI 88 unchanged. mergeable_state=clean. Pattern-consistent with #512/#514/#517/#519/#521/#524.