# Contributor Sessions Log Rolling log of active sessions on the ItsGoin repository. Every contributor — Lead or Jr — appends an entry on session start and updates it on session end. Newest entries at the top. See `CONTRIBUTING.md` for the protocol. See `AGENTS.md` for the Claude-specific session-start checklist. --- ## 2026-04-24 — primary Claude (Lead) — `docs/fof-spec-layer1-bio-grants` **Started**: April 24 UTC **Instance**: Scott's primary Claude (Lead) **Issue**: none (spec refinement) **Branch**: `docs/fof-spec-layer1-bio-grants` **Scope**: Fold Scott + Opus's Layer 1 design answer into the spec. Vouch distribution moves from DM-wrapped `VouchGrant` to HPKE-sealed per-recipient wrappers carried in the voucher's bio post, leveraging existing bio-post CDN propagation and HPKE (RFC 9180) key privacy for recipient anonymity. **Key design commitments added to Layer 1**: - HPKE RFC 9180 (DHKEM X25519 + HKDF-SHA256 + ChaCha20Poly1305) for per-recipient wrappers; one ephemeral pubkey per batch; 48B per wrapper. - HKDF `info = "itsgoin/vouch-grant/v1/" || bio_post_id` — recipient-free (non-negotiable for key privacy). - No prefilter tag on grants (no prior shared secret); full X25519 trial at ~60µs per wrapper per persona is tolerable (≤90ms even at 512×3 worst case). - Scan policy: auto-scan bio posts of followed personas; manual "check bio" gesture for non-followed; scan cache keyed by `(scanner_persona, bio_author, bio_epoch)`. - Bucket-padding (64/128/256/512) and per-publish wrapper shuffle for size/position opacity. - No separate `vouches_issued` table on the wire; bio post IS the authoritative record. Local-only `own_vouch_targets` tracks what the persona has granted. - Incremental grant-as-comment path (Scott's suggestion for avoiding full republish) deferred; v1 ships with full republish per change. **Completed**: - Rewrote `docs/fof-spec/layer-1-vouch-primitive.md` end-to-end. - README updated: Layer 1 scope line + added bio-post integration bullet. - Self-merged to master. **Pending**: - Opus confirmation passes still open on other layers (WrapSlot byte layout, AEAD choice for body, padding schemes). - Layer 2–6 untouched in this pass. **Stopping point**: Scott asked to hold merges until Layers 2–6 iterations complete. Branch stays open locally and on Forgejo; continuing to stack commits on it. ### Update 2026-04-24 — Layer 2 rewrite (CDN-level verification) **Scope**: Scott shared Opus's Layer 2 design answer. Folded in. **Design commitments added**: - **Per-`V_x` signing keypair `(pub_x, priv_x)`** — replaces single per-post `pub_post/priv_post`. CDN can now verify comment signatures against a published `pub_post_set` before forwarding, killing the bandwidth-amplification DoS an admitted FoF member could otherwise mount. - **Dual-derivation wrap slot**: `read_slot → CEK`, `sign_slot → priv_x`. One unwrap yields both capabilities. Slot structure is shared with Layer 3 (canonical form lives here). - **Comment body encrypted under `CEK_comments = HKDF(CEK, "comments")`** — Mode 2 comments are genuinely FoF-read-gated now, not just FoF-sign-filtered at render (strengthening vs skeleton). - **Propagation-node four-check accept rule**: valid `pub_x_index`, not in `revocation_list`, `group_sig` verifies, `identity_sig` verifies. Any fail → drop without forwarding. - **Author-signed revocation diff** appended to post header; CDN honors on next sync. Per-chain revocation at propagation layer. - **`pub_x_index` is a per-post pseudonym** — leaks "these N comments came through the same chain" within a single post; re-randomizes across posts. Accepted tradeoff for CDN-level DoS resistance. - **v1 ships Ed25519 inline** (~77KB header at 500 vouchees). **PQ future** requires Merkle-commit over `pub_post_set` with per-comment inclusion proofs; deferred but spec shape doesn't preclude. **Files touched**: - `docs/fof-spec/layer-2-mode2-fof-comments.md` — rewritten end-to-end. - `docs/fof-spec/layer-3-mode1-fof-closed.md` — prominent "partially superseded" banner added; body retained pending reconciliation when Scott + Opus review Layer 3. - `docs/fof-spec/README.md` — glossary updated (`pub_x`/`priv_x`, `pub_post_set`, `revocation_list`); integration bullet updated for new `InlineComment` fields + CDN accept rule. **Open questions I raised back to Scott** (awaiting his answer before finalizing): 1. `(pub_x, priv_x)` lifecycle: generated at `V_x` genesis (Layer 1) and stable across posts, vs regenerated per-post by author. Lead leaning per-post. Needs confirmation. 2. `pub_post_set` padding vs `wrap_slots` padding — real/dummy alignment when dummies shouldn't be indexable by `pub_x_index`. 3. Non-FoF rendering of comment count (reveal engagement? suppress?). 4. Who holds `priv_me` (author) — generated alongside `V_me` at Layer 1, vs per-post regeneration. Same as #1 but for author's own entry. **Pending**: - Scott reviews / answers open questions. - Layer 3 reconciliation when Scott + Opus get to Mode 1. - Layers 4–6 iterations. **Stopping point**: commit `b8b38a6` (Layer 1) + new commit for Layer 2 both on branch; not merged. Awaiting Scott. --- ## 2026-04-23 — primary Claude (Lead) — `docs/fof-spec-skeleton` **Started**: late April 23 UTC **Instance**: Scott's primary Claude (Lead role) **Issue**: none (spec-drafting work; hand-off to Opus for crypto fill-in) **Branch**: `docs/fof-spec-skeleton` **Scope**: Skeleton spec for Friend-of-Friend (FoF) post gating. Lays out the per-person vouch-key (`V_me`) primitive, four visibility levels (Public / Friends-only / FoF / Custom), Mode 1 (`FOF_CLOSED`) and Mode 2 (public post + FoF comments), and a six-layer implementation plan. Crypto byte layouts and algorithm specifics are marked `TBD — OPUS` for Opus to fill in. **Completed in this session**: - `docs/fof-spec/README.md` — top-level overview, user-facing model, design properties, layering plan, out-of-scope, glossary, integration with existing primitives. - `docs/fof-spec/layer-1-vouch-primitive.md` — `V_x` keys, per-persona keyring, `VouchGrant` wire format (DM-wrapped). - `docs/fof-spec/layer-2-mode2-fof-comments.md` — `CommentPolicy::FriendsOfFriends`, `pub_post` / `priv_post` / wrap-slot primitives, `group_sig` + `vouch_mac` on comments. - `docs/fof-spec/layer-3-mode1-fof-closed.md` — `PostVisibility::FoFClosed`, wrap-slot byte layout, anonymous 2B prefilter, power-of-2 slot padding. - `docs/fof-spec/layer-4-keypair-rotation.md` — `PostKeyRotation` record, explicit `pub_post_index` on comments, per-post re-gating. - `docs/fof-spec/layer-5-prefilter-and-cache.md` — `vouch_unlock_cache`, `vouch_unreadable_posts`, author-direct fast path, keyring-change retry sweep. - `docs/fof-spec/layer-6-revocation.md` — stub; candidate designs A–D; Lead leaning is coarse-rotation with UX polish (Candidate D); revisit after 30 days of production data. **Pending after this PR merges**: - Opus review pass: fill in `TBD — OPUS` markers (AEAD specifier, key sizes, WrapSlot byte layout, prefilter tag algorithm confirmation, epoch granularity, etc.). - Lead re-review after Opus fills in crypto. - Per-layer branch schedule for implementation (Layer 1 ships first, independently exercised). **Stopping point**: session ending after Lead self-merges `docs/fof-spec-skeleton` to master. Branch to be deleted locally + remote. --- ## 2026-04-23 — primary Claude (Lead) — `chore/workflow-adoption` **Started**: late April 23 UTC **Instance**: Scott's primary Claude (Lead role per `feedback_senior_role.md`) **Issue**: none yet (inaugural PR; this is the chicken-and-egg case noted in CONTRIBUTING.md) **Branch**: `chore/workflow-adoption` **Scope**: Introduce the multi-contributor workflow to the repo. Creates `CONTRIBUTING.md`, `AGENTS.md`, and this file (`sessions.md`) with a seed entry. **Pre-existing state at session start**: - v0.6.2 shipped end-to-end earlier today: APK, AppImage, CLI, anchor (PID 3475521, up since ~17:39 UTC). - Last merged-to-master commit before this branch: `2ce668a` — People-tab rewrite (recency sort, profile-post Discover, bio modal, ignore primitive, per-author feed filter). - Active artifacts on `itsgoin.com/public_html/`: `itsgoin-0.6.2.apk` (183.7 MB), `itsgoin_0.6.2_amd64.AppImage` (177.7 MB), `itsgoin-cli-0.6.2-linux-amd64` (40.8 MB). - No other contributors active. **Completed in this session (before this commit)**: - Designed the Lead role + amendments to the base workflow (hotfix carve-out, partnered build/deploy go-no-go, Lead-pulls-queue review pattern, re-evaluation triggers, Scott's contributor-alignment role, Lead self-merge authority). - Saved `feedback_senior_role.md` to instance memory. - Wrote `CONTRIBUTING.md`, `AGENTS.md`, `sessions.md` (this file). Originally drafted the agent guide as `CLAUDE.md` but that filename is `.gitignore`d at the repo root because it has historically been a credential-leak vector; switched to `AGENTS.md` with an explicit security banner. - Iterated on Scott's role: initial draft put him in the PR-routing / build-authorizer position; revised to watch contributor alignment + partner on ship, Lead self-merges. **Pending after this PR merges**: - Phase 0 prereqs from `CONTRIBUTING.md`: Forgejo CI (`cargo check --workspace` + `cargo test -p itsgoin-core` on push + PR), branch protection on master (require PR + 1 review + green CI), second Forgejo account + SSH key for Jr Claude(s). Scott coordinates. **Stopping point**: session ending — Lead self-merged this PR to master (inaugural exercise of the self-merge authority the PR itself establishes, per Amendment 6). Branch `chore/workflow-adoption` deleted locally + remote. ---