Refine sm-flow trigger and scale rules

devflow/projects/2026-07-05-validate-sm-flow-standard-change/evidence.md

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+# Validate SM Flow Standard Change Evidence
+
+## Static Evidence
+
+- Scale definition scan found complete `standard / micro / complex` definition headings and definition phrases only in `.agents/skills/sm-flow/references/scales.md`.
+- Obsolete wording scan returned no matches for:
+  - minute/hour/second/timebox metrics
+  - old skip semantics
+  - old fixed `proposal.md + design.md` expression
+  - old conflict wording targeted by prior validation
+
+## Script Evidence
+
+- Passed: `python C:/Users/兜/.codex/skills/.system/skill-creator/scripts/quick_validate.py .agents/skills/sm-flow`
+- Passed: `references/*.md` integrity scan.
+
+## Artifact Evidence
+
+- OpenSpec standard artifacts exist:
+  - `openspec/changes/validate-sm-flow-standard-change/proposal.md`
+  - `openspec/changes/validate-sm-flow-standard-change/design.md`
+  - `openspec/changes/validate-sm-flow-standard-change/specs/sm-flow-standard-change/spec.md`
+  - `openspec/changes/validate-sm-flow-standard-change/tasks.md`
+- Devflow standard artifacts exist:
+  - `brief.md`
+  - `evidence.md`
+  - `decisions.md`
+  - `acceptance.md`
+
+## Limits
+
+- This validation is static/file-based.
+- It does not run a real external OpenSpec CLI command.
+- It does not include independent subagent forward-testing.