chore(memory): LRN-070 + journal 2026-06-29 — gitflow migration complete (6/6)

.claude/memory/learnings.md

@@ -68,6 +68,7 @@ rules:
 | LRN-067 | 2026-06-28 | pipeline that LOOKS 2-level can terminate at SAME level; human-mediated step (interactive menu) masks the double-action until automated | replacing an interactive/human step with a deterministic one over a delegated sub-skill |
 | LRN-068 | 2026-06-29 | enforcement-bootstrap must be transactional: activate the guard LAST + gate it on the bootstrap commit succeeding; precheck identity | any init that installs a hook/protection AND commits |
 | LRN-069 | 2026-06-29 | token-authed remote writes under CC perms: inline-env (never `export`), token in header not argv, keep `git push` on ASK as the gate | scripting git/curl writes to a private remote from tool calls |
+| LRN-070 | 2026-06-29 | clean-tree-gated migration blocked by a dirty submodule → diagnose pointer-vs-content; for a local edit use `submodule.<name>.ignore=dirty`, never blind reset | migrating/releasing a superproject whose submodule carries intentional local edits |
 
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@@ -788,3 +789,8 @@ rules:
 - **pattern**: a secrets-guard `Bash(export *)` in `permissions.deny` auto-denies ANY command whose FIRST token is `export …` — a false positive (`export GIT_CONFIG_VALUE_0="Authorization: token $TOK" …` reads as blocked when only the `export` prefix tripped it, not the git/curl op). Correct model for token-authed remote writes from tool calls: (a) INLINE env assignment `GIT_CONFIG_COUNT=1 GIT_CONFIG_KEY_0=http.extraHeader GIT_CONFIG_VALUE_0="Authorization: token $TOK" git push …` (no `export` keyword → passes; token rides the http header via git env-config, NEVER in argv nor written to the clone's `.git/config`); (b) keep `Bash(git push *)` on ASK (not deny) — that prompt IS the per-write human gate; don't suppress it, don't allow-list pushes in settings.
 - **context**: gitflow migration on Gitea. 3 consecutive tool-call denials traced to `Bash(export *)` (false positive); an earlier INLINE-env `ls-remote` passed; the user's own `!` shell ran the same `git push` fine (not under CC perms). Confirmed `git push` is ASK by design = the right gate locus, NOT `export *`.
 - **future application**: scripting token-authed git/curl writes under CC perms → inline env (never `export`), token in `Authorization` header (curl `-H`, git `GIT_CONFIG_*` extraHeader), keep `git push` on ASK as the approval. Tool-call denied unexpectedly → read `permissions.deny` for an over-broad prefix rule (`export *`, `env`, `printenv`) catching a false positive BEFORE concluding the op itself is blocked.
+
+## LRN-070 — clean-tree-gated migration + a dirty submodule: diagnose pointer-vs-content, ignore=dirty not blind reset
+- **pattern**: an op gated on a clean tree (`git status --porcelain`) is blocked by a submodule showing ` M`. FIRST distinguish: (a) **pointer move** — gitlink (HEAD) ≠ submodule HEAD → resettable via `git submodule update`/`checkout`; (b) **dirty content** — gitlink UNCHANGED, files modified INSIDE the submodule → a local edit. For an intentional local edit, `checkout --`/`submodule update` correctly REFUSE to discard it, and a blind "reset" would DESTROY it. Exclude it non-destructively: `git config submodule.<name>.ignore dirty` (local `.git/config`) → status stops reporting the submodule's dirty content, gate passes, edit preserved. Commit it to `.gitmodules` to share the ignore across clones.
+- **context**: claude gitflow self-migration. `skills-external/gstack` showed ` M`; gitlink `070722a` == submodule HEAD `070722a` (NOT a pointer move), 2 tracked-modified files (`bun.lock`+`package.json`) = the [[BLK-008]] Playwright 1.61 bump (Ubuntu 26.04 browser). The planned "reset" (D2) would have discarded the browser fix; `submodule.skills-external/gstack.ignore=dirty` cleared the tree for `migrate_local`, bump intact.
+- **future application**: any clean-tree-gated op (migrate/release/bisect) on a superproject with a submodule carrying intentional local edits → diagnose pointer-vs-content FIRST (compare gitlink to submodule HEAD); for content, `submodule.<name>.ignore=dirty`, never a blind reset. Cross-ref [[BLK-008]] (gstack -dirty by design).