Record the adoption unit run and positive/negative evidence

Why: Phase 6 requires one positive executor run and the negative cases (missing config, bad receipt, out-of-scope path, unknown side effect) before adoption becomes active.
Evidence: .task/evidence/governance-adoption/ (SELF): governance check, agent-exec validate and adoption cases; this commit passed the generated pre-commit hook (admit).
Impact: task card and evidence logs only.
Refs: .task/feature-governance-adoption.md

.task/evidence/governance-adoption/03-20261017T071536Z.log

@@ -0,0 +1,19 @@
+command: scripts/dm governance check --repo . 
+cwd: /home/weichen/projects/Agent-System-Core-wt-feature-governance-adoption
+head: 1ada9955d57af1dcfb750db2f01a1bcc40fd3ac4
+exit: 0
+utc: 20261017T071536Z
+---
+ok gitlink deps/development-guidelines
+ok gitlink deps/development-manager
+ok agent-execution
+ok file AGENTS.md
+ok file PROJECT.md
+ok file policy/guidelines-adoption.md
+ok file .task/templates/task-card.md
+ok executable scripts/agent-exec
+ok executable scripts/hooks/pre-commit
+ok executable scripts/dm
+ok executable scripts/task
+ok adoption status
+ok fixtures

.task/evidence/governance-adoption/04-20261017T071536Z.log

@@ -0,0 +1,7 @@
+command: scripts/agent-exec validate --repo . 
+cwd: /home/weichen/projects/Agent-System-Core-wt-feature-governance-adoption
+head: 1ada9955d57af1dcfb750db2f01a1bcc40fd3ac4
+exit: 0
+utc: 20261017T071536Z
+---
+validate: ok

.task/evidence/governance-adoption/05-20261017T071536Z.log

@@ -0,0 +1,13 @@
+command: python3 /tmp/gov-neg/adopt_cases.py . 
+cwd: /home/weichen/projects/Agent-System-Core-wt-feature-governance-adoption
+head: 1ada9955d57af1dcfb750db2f01a1bcc40fd3ac4
+exit: 0
+utc: 20261017T071536Z
+---
+[object] Agent-System-Core-wt-feature-governance-adoption HEAD=1ada9955d57af1dcfb750db2f01a1bcc40fd3ac4
+PASS positive-run-apply: run exit=0 terminal=success apply exit=0 head=f6303ea75059
+PASS missing-config: run exit=2 terminal=invalid-config validate exit=2
+PASS bad-receipt: apply exit=4 head_unchanged=True msg=apply: no local integrity record: changed paths do not match the transport diff
+PASS out-of-scope-path: run exit=5 terminal=scope-expansion transport=False
+PASS unknown-side-effect: run exit=4 terminal=failed-unknown transport=False
+[verdict] ALL PASS cases=5

.task/feature-governance-adoption.md

@@ -27,6 +27,7 @@
 | 单元 ID | 预期范围 | 角色 | 候选顺序 | attempt | CLI/模型 | 终态 | transport | fallback | 源码外收据路径 |
 |---|---|---|---|---|---|---|---|---|---|
 | governance-adoption-Agent-System-Core-r1 | 13 个允许路径（治理文件 + 两个 gitlink） | dde4f359 | implementation | cursor→antigravity→pi | run 9a7ec135（dm-server 42e675f，attempts=1） | cursor / not-observable | success | 98cfc6408d49（apply 快进） | 否 | /tmp/gov-receipt-Agent-System-Core-r1.json |
+| governance-adoption-Agent-System-Core-repin-r1 | 9 个允许路径（治理文件 + 两个 gitlink） | a160b03c | implementation | cursor→antigravity→pi | run e64b5afe（dm-server pinned，attempts=1） | cursor / not-observable | success | 1ada9955d57a（apply 快进） | 否 | /tmp/gov-receipt-Agent-System-Core-repin-r1.json |
 
 ## 同步记录
 
@@ -45,3 +46,6 @@
 | 20261017T061900Z | `scripts/dm governance check --repo .` | 98cfc6408d49 | 0 | SELF | ok fixtures；[输出](evidence/governance-adoption/00-20261017T061900Z.log) sha256:ae4439e39cad7e8d |
 | 20261017T061900Z | `scripts/agent-exec validate --repo .` | 98cfc6408d49 | 0 | SELF | validate: ok；[输出](evidence/governance-adoption/01-20261017T061900Z.log) sha256:89ea92d2c3d1f9e4 |
 | 20261017T061900Z | `python3 /tmp/gov-neg/adopt_cases.py .` | 98cfc6408d49 | 0 | SELF | [verdict] ALL PASS cases=5；[输出](evidence/governance-adoption/02-20261017T061900Z.log) sha256:64f13535108476f9 |
+| 20261017T071536Z | `scripts/dm governance check --repo .` | 1ada9955d57a | 0 | SELF | ok fixtures；[输出](evidence/governance-adoption/03-20261017T071536Z.log) sha256:f46b6a39dd69f693 |
+| 20261017T071536Z | `scripts/agent-exec validate --repo .` | 1ada9955d57a | 0 | SELF | validate: ok；[输出](evidence/governance-adoption/04-20261017T071536Z.log) sha256:4a0c76e79c70e3bb |
+| 20261017T071536Z | `python3 /tmp/gov-neg/adopt_cases.py .` | 1ada9955d57a | 0 | SELF | [verdict] ALL PASS cases=5；[输出](evidence/governance-adoption/05-20261017T071536Z.log) sha256:3eb026a392f8336b |