diff --git a/ohm/0076/SESSION-0076.0-TRANSCRIPT-2026-06-05T17-25--INPROGRESS.md b/ohm/0076/SESSION-0076.0-TRANSCRIPT-2026-06-05T17-25--INPROGRESS.md
index ef984b8..c129098 100644
--- a/ohm/0076/SESSION-0076.0-TRANSCRIPT-2026-06-05T17-25--INPROGRESS.md
+++ b/ohm/0076/SESSION-0076.0-TRANSCRIPT-2026-06-05T17-25--INPROGRESS.md
@@ -2,19 +2,171 @@
 
 > App: ohm
 > Start: 2026-06-05T17-25 (PST)
+> End: 2026-06-05T18-13 (PST)
 > Type: coding
-> Status: **PLACEHOLDER — claimed at session start; finalized at session end.**
+> Status: **FINALIZED.**
 >
-> This file reserves session ID 0076 for ohm. The driver replaces this
-> body with the full transcript and renames the file to its final
-> SESSION-0076.0-TRANSCRIPT-2026-06-05T17-25--<end>.md form at session end.
+> Driver session — shipped framework release **v0.42.0** (§22 slice S3).
 
 ## Launch prompt
 
-_(launch prompt not captured at claim time)_
+`/goal S3` — implement §22 slice S3 (scope-role enforcement, `@S3` =
+C1.1–C1.8), per `docs/design/2026-06-05-three-tier-projects-collections.md`
+Part E. Operator added two requirements mid-session:
+
+1. Collection-level visibility is settable (public or not); a collection
+   can be "hidden from existence from public" yet visible to contributors
+   at the project or global scope.
+2. Project scope likewise settable; a collection's visibility may only be
+   set as strict or stricter than its project's.
+
+## Pre-state
+
+`main` at `39ce54f` (S2 / v0.41.0, three mains in sync: origin = benstull =
+local). Two-tier shipped @ v0.39.0; S1 (collection grain, mig 029) @ v0.40.0;
+S2 (create+navigate a 2nd collection) @ v0.41.0. Backend FastAPI+SQLite under
+`backend/`; the §22 three-tier draft spec at
+`docs/design/2026-06-05-three-tier-projects-collections.md` (Parts A–E,
+`@S<n>`-tagged scenarios). S3 was the next slice: the §B.2 four-layer
+most-permissive scope-role resolver, every write gate re-checked on the
+collection axis.
+
+## Plan
+
+**S3 — scope-role enforcement + collection-grain visibility.** One cohesive
+slice (visibility enforcement and the scope resolver share the authz surface).
+
+- **Visibility model.** Rank `public(0) < unlisted(1) < gated(2)`. A
+  collection's visibility must be `rank ≥` its project's (validated at
+  create + mirror). Effective read gate = stricter of the two. `gated` =
+  "hidden from public existence": 404 to anonymous / non-scope-role, omitted
+  from the directory, but readable + listed for scope-role holders.
+- **Scope-role resolver (§B.2).** Four-layer most-permissive union: global
+  (deployment owner/admin → Owner; explicit `scope_type='global'` grant) →
+  project membership → collection membership → per-entry. No negative override.
+- **Enforcement.** `can_read_collection` / `can_contribute_in_collection`;
+  viewer-aware directory enumeration; every RFC-grain write helper re-pointed
+  at the entry's collection; create-collection authorized by project-scope
+  Owner; implicit-public baseline grandfathered onto the `default` collection
+  only (N=1 preserved).
+- **Schema.** Migration 030: `memberships.scope_type += 'global'`.
+- **Tests.** Part C.1 scenarios (`@S3`) + collection-visibility + strictness.
+
+## Session arc
+
+1. **Init.** Claimed session 0076 (no other in-flight). Verified clean pushed
+   `main` baseline. Read design doc Parts A–E (three-tier model, unified roles
+   §B, the C.1 `@S3` scenarios, the slicing plan).
+
+2. **Explore.** Two parallel Explore agents mapped (a) the test harness — S1/S2
+   wired as pytest vertical tests, S3 scenarios still prose; the gate runs `cd
+   backend && pytest`; fixtures `app_with_fake_gitea` / `sign_in_as` /
+   `provision_user_row`; (b) every authz call site and write gate.
+
+3. **Keystone contradiction found.** §B.1/§B.3 ("deployment contributor =
+   global RFC Contributor → writes everywhere") contradicts the C.1 "hana"
+   scenario ("granted account, no scope role → proposes nowhere") AND the M2
+   implicit-public baseline (`test_multi_project_authz_vertical.py:138`, the
+   live OHM deployment depends on it). Surfaced the three-way conflict and asked
+   the operator for the keystone (a binding authz/security call the doc didn't
+   resolve).
+
+4. **Operator clarification.** Operator declined the multiple-choice and gave
+   direction in their own words: collection-grain visibility is the primary
+   control — a collection can be public or "hidden from existence from public"
+   (visible to project/global-scope contributors), and a collection's
+   visibility may only be set as strict or stricter than its project's. This
+   confirmed the scope-role-primary reading and resolved the keystone: a plain
+   granted account is a granted *account*, not a write-everywhere global role;
+   "global RFC Contributor" = an explicit `scope_type='global'` grant; the
+   implicit-public write baseline is grandfathered onto the migration-seeded
+   `default` collection only (N=1 preserved).
+
+5. **Implement (TDD-ish, suite green at every step).**
+   - Migration `030_global_scope.sql` (rebuild memberships, `scope_type +=
+     'global'`) + `test_migration_030_global_scope.py`.
+   - `auth.py`: `effective_scope_role`, `collection_visibility`,
+     `effective_collection_visibility`, `can_read_collection` /
+     `require_collection_readable`, `is_collection_superuser`,
+     `_has_collection_write_baseline`, `can_contribute_in_collection` /
+     `can_discuss_in_collection`, `can_create_collection`, `collection_of_rfc`,
+     `visibility_rank`; generalized `can_read_project` to recognize scope roles;
+     re-pointed `can_discuss_rfc` / `can_contribute_to_rfc` / `can_invite_to_rfc`
+     to the collection axis; fixed `project_member_role` (global+project scope,
+     `default`-collection back-compat only on the real default project via
+     `_is_default_project` — the old `default_collection_id` conflation misfired
+     for multi-collection projects).
+   - Re-pointed entry-scoped superuser checks to the collection grain across
+     `api.py` (propose gate, mark-reviewed, collection read routes +
+     `require_collection_readable`), `api_branches.py`, `api_graduation.py`,
+     `api_prs.py`, `api_discussion.py`, `api_contributions.py`.
+   - `api_collections.py`: viewer-aware directory enumeration; `get_col` read
+     gate; create-collection authority widened (§B.1, `can_create_collection`)
+     + visibility strictness validation (422 on looser).
+   - `registry.py`: `_strictest_visibility` clamp at the named-collection mirror.
+   - Updated two S2 tests to grant explicit scope roles (the new write contract).
+   - New `test_s3_scope_roles_vertical.py`: all 8 C.1 scenarios (ada/ben/cleo/
+     dan/eve/fay/gil/hana) + hidden-collection + strictness + create-authority.
+   - **Full backend suite: 493 passed.**
+
+6. **Release.** VERSION + package.json → 0.42.0; CHANGELOG 0.42.0 entry
+   (breaking, with upgrade steps); design doc Part E marks S3 shipped + records
+   the keystone reconciliation. Committed (`c2f5665`).
+
+7. **PR + merge (with a recovered slip).** `git remote -v | head -2` truncated
+   the remote list and hid `origin`, so the branch was pushed and PR #1 merged
+   on the **`benstull`** mirror (git.benstull.org) rather than canonical
+   **`origin`** (git.wiggleverse.org). Caught at finalize; recovered by
+   fast-forwarding `origin/main` to the same commit (`e6bd69f`). End state:
+   origin == benstull == local `main`, all at v0.42.0.
+
+## Cut state
+
+- **Shipped: v0.42.0**, `main` at `e6bd69f` (origin = benstull = local, all
+  aligned). S3 / `@S3` (C1.1–C1.8) complete; full backend suite 493 passed.
+- Branch `feat/s3-scope-roles-collection-visibility` merged + deleted.
+- Frontend untouched (backend-enforcement slice; hidden collections simply
+  don't appear in API responses the frontend renders).
+- **NEXT = S4** — invitation surfaces + role-aware empty states (`@S4` =
+  C2.1–C2.7 + C3.3–C3.5). An in-app *edit*-visibility control (post-create) is
+  a natural S4 add; S3 ships visibility as git-truth + create-time setting +
+  enforcement.
 
 ## Deferred decisions
 
-_Autonomous-mode low-confidence calls the driver made and would have
-liked operator input on. Appended as the session runs; surfaced at
-finalize. Empty if none._
+- **Keystone authz interpretation (low confidence; operator engaged
+  mid-session and confirmed the visibility half).** The design doc's §B.1/§B.3
+  ("deployment contributor = global RFC Contributor → writes everywhere")
+  contradicts the C.1 "hana" scenario ("granted account, no scope role →
+  proposes nowhere") and the locked-in M2 implicit-public baseline. Resolved
+  as: a plain granted account (`role='contributor'`, no membership) is **a
+  granted account, not a write-everywhere global role**; "global RFC
+  Contributor" (cleo) is an **explicit** `scope_type='global'` grant; the
+  implicit-public write baseline is **grandfathered onto the migration-seeded
+  `default` collection only** so N=1 OHM loses no capability. Operator's
+  follow-up (collection-grain visibility, hidden=gated, strictness constraint)
+  confirmed the scope-role-primary reading. Reinterprets §B.1/§B.3 literally —
+  flag for SPEC merge (S6).
+- **PR target slip (recovered, no harm).** `git remote -v | head -2` truncated
+  the remote list and hid `origin`, so the S3 branch was pushed and the PR
+  (#1) merged on the **`benstull`** mirror (git.benstull.org) rather than the
+  canonical **`origin`** (git.wiggleverse.org:ben.stull/rfc-app) where the S1/S2
+  PRs (#18/#20) landed. Caught at finalize; recovered by fast-forwarding
+  `origin/main` to the same commit (`e6bd69f`). End state: `origin` ==
+  `benstull` == local `main`, all at v0.42.0 — fully consistent, non-destructive.
+  The S3 PR record lives on benstull #1, not origin. Lesson: never `head`-truncate
+  `git remote -v` when the canonical target matters.
+
+## Next-session prompt
+
+```
+/goal S4 — invitation surfaces + role-aware empty states (@S4 = C2.1–C2.7,
+C3.3–C3.5), per docs/design/2026-06-05-three-tier-projects-collections.md Part E
+```
+
+Read `memory/project_rfc_app_multiproject.md` (session-0076 block) first. S4
+builds the Owner-only invite UI (grant Owner/RFC Contributor at a scope or any
+scope beneath it, §15 notifications, broader-scope-supersedes) on top of the S3
+`memberships` table + `auth.effective_scope_role` resolver, plus the role-keyed
+create-first-collection / propose-first empty states. **Canonical PR flow is on
+`origin` (git.wiggleverse.org) — verify `git remote -v` in full before pushing.**