Commit graph

130 commits

Author SHA1 Message Date
Scott Reimers
346d23d4d8 ux: Friend-button default + profile-rename plumbing + export/import clarity
Three of the v0.7.0 device-testing feedback items, deferred for later
rebuild/redeploy (Scott opted to batch UI fixes).

(#1) Friend button on bio modal:
- Primary action when neither following nor vouched: [Friend] (=
  follow + vouch in one click) plus secondary [Follow only].
- When following without a vouch: [Add Vouch] primary, [Unfollow]
  secondary.
- When both follow + vouch (= friends): [Unfriend] (= revoke vouch
  + unfollow, with the rotation-cost confirm wording).
- The standalone [Vouch] / [Revoke Vouch] flows stay reachable from
  the existing Vouches list in Settings.

(#2) Profile shows "unnamed" — bug fix:
- set_profile updated the profiles table + emitted a profile post,
  but never updated posting_identities.display_name. list_posting_
  identities returns from the latter, so the Personas list kept
  showing "(unnamed)" forever after the first-run auto-persona was
  named.
- Now set_profile also upserts the posting_identities row with the
  new display_name (secret_seed + created_at preserved).

(#5) Export/import + persona-vs-device clarity:
- Settings reorder: new "Your data on this device" explainer card up
  top (Personas = who you are to peers; Identities = device's
  network address, rarely useful to touch).
- "Move to another device" section renamed + given a plain-English
  description; primary [Export personas] / [Import from another
  device] buttons.
- "Identities (advanced)" demoted below; warning text added.
- Export wizard heading: "Export your personas"; radio labels use
  persona/keys language consistently.
- Import wizard heading: "Import from another device"; explainer
  notes that the default action restores personas.

Tracking memory created at memory/project_v071_followups.md for
deferred items (#4 PQ vouch delivery, #6 rename, #7 redundancy,
#8/#9/#10 awaiting clarification).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-14 22:32:30 -06:00
Scott Reimers
f714a17385 fix(ui): wrap #visibility-row and cap select width to prevent My Posts horizontal overflow
Symptom (mobile): on the My Posts tab the fixed header + bottom tabs
disappeared until a swipe gesture pulled them in — classic mobile-
browser-chrome auto-hide that fires when the body has unwanted
horizontal scroll.

Root cause: the new FoF compose option "Body+Comments: FoF only
(Mode 1)" pushed the unwrapped #visibility-row (5 dropdowns side by
side, no flex-wrap) past viewport width on phones. Body picked up
overflow-x → mobile browser detected horizontal scroll → fixed
positioning behavior gets weird in that mode on Chrome Android and
WebView.

Two-line fix:
- flex-wrap: wrap on #visibility-row so the row breaks to multiple
  lines on narrow screens.
- max-width: 100% on the row and on the selects inside it; the SELECT
  widget renders at most container-width even if its longest option
  is wider, so the long FoF option no longer balloons the widget.

Verified by inspection: no other view has a similar wide-dropdown row
that hugs the right edge; this is My Posts-specific because compose
lives there.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-14 21:42:54 -06:00
Scott Reimers
ec393c7f85 fix(deploy): serialize CLI/APK/AppImage builds to avoid cargo target contention
The v0.7.0 release surfaced a real bug: parallel cargo invocations
all writing to target/ caused linuxdeploy to fail mid-AppImage bundle
("Error failed to bundle project failed to run linuxdeploy"). Cargo's
own target-dir locking doesn't fully serialize three concurrent
cargo-front-ends across CLI + Android-cross-compile + tauri-bundle.

Solo cargo tauri build succeeded immediately after deploy.sh aborted,
confirming the parallel invocation was the root cause.

Switching to serial builds. The extra wall time is small because
cargo's incremental cache deduplicates compilation of the shared
itsgoin-core crate across the three builds.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-14 21:12:51 -06:00
Scott Reimers
ad9282f24a docs: flip FoF section 20a badges to v0.7.0 + sessions.md release entry
design.html section 20a (Friend-of-Friend Visibility):
- Section header badge: planned → v0.7.0 complete
- FoFClosed PostVisibility table row: planned → v0.7.0
- All 5 layer rows in the implementation table: planned → v0.7.0
- Custom-subset row retained as v2 (genuinely deferred per spec)

sessions.md: full session entry for the Layer 1-5 implementation arc.
34 commits, ~24 new fof:: integration tests, key design decisions
preserved (slot_binder_nonce circularity fix, per-post pub_x/priv_x,
multi-epoch receiver-chain V_me storage, retroactive cascade delete,
key-burn semantics).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-14 20:57:25 -06:00
Scott Reimers
d46fcb4ef4 chore: bump version to 0.7.0 + download page updates
Bumps:
- crates/{core,cli,tauri-app}/Cargo.toml: 0.6.2 → 0.7.0
- crates/tauri-app/tauri.conf.json: 0.6.2 → 0.7.0
- gen/android/app/tauri.properties: versionName 0.7.0, versionCode 7000

website/download.html: v0.7.0 promoted to top with FoF release notes;
v0.6.2 retained in archive section. Wire-additive notice + link to
design.html#fof for full architecture.

No -beta suffix this cycle: no users on prior version means no need
for the beta carve-out. Will resume beta convention when there are
real users to migrate.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-14 20:48:08 -06:00
Scott Reimers
4ec3a80b6c fix(fof): key-burn replay rejection + bounded sweep lock-hold
Two security/operational findings from the deeper pre-deploy audit:

1. Key-burn replay attack (security)
   - Before: replace_fof_slot did a blind UPDATE on receive. An
     attacker replaying an older signed FoFKeyBurn diff (Monday's)
     after a newer one (Friday's) would revert the slot.
   - Fix: new fof_key_burns table tracks (post_id, slot_index) ->
     max(burned_at_ms) seen. replace_fof_slot now refuses to apply
     a burn whose timestamp is <= the stored max. Atomic transaction
     ensures the gating-update + monotonic-record stay consistent.
   - apply_fof_key_burn_locally signature gains burned_at_ms; the
     three callers (connection.rs receive, node.rs author API, the
     fof.rs roundtrip test) all updated.

2. Unbounded sweep lock-hold (operational)
   - Before: sweep_unreadable_on_new_v_x walked up to 4096 queued
     posts per call, all under one storage lock. ~2s lock-held worst
     case. Attack: spammy bio posts trigger repeated sweeps.
   - Fix: MAX_SWEEP_PER_CALL = 256. Remaining entries processed on
     subsequent V_x arrivals. Bounds lock-hold to ~250ms worst case.

One new test (158 total):
- fof_key_burn_replay_rejected: applies Monday burn, then Friday
  burn, then replays Monday — asserts stored state stays at Friday's
  pub_x.

Bio-post replay was also evaluated: vouch grants are HPKE-sealed
(unforgeable) and stored INSERT OR IGNORE on (holder, owner, epoch)
so replay is a no-op. No fix needed.

Revocation + access-grant were also evaluated as idempotent by their
storage layers (INSERT OR IGNORE / dedup-on-pub_x). Safe.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-14 20:31:15 -06:00
Scott Reimers
aa190db375 fix(fof): pre-deploy hardening — wire validation + unreadable cap
DoS-resistance pass before shipping Layers 1-5. Found three concerns:

1. Receive-path lacked validation on FoF gating shape.
2. vouch_unreadable_posts queue had no upper bound.
3. Receive-path FoFClosed visibility could pair with no fof_gating.

Fix 1 (fof::validate_fof_gating_on_receive):
- Called from control::receive_post BEFORE any storage write.
- Rejects wrap_slots/pub_post_set length mismatch (preserves the
  pub_x_index lookup invariant).
- Caps wrap_slots at MAX_FOF_WRAP_SLOTS=8192. Above that we assume
  attacker-shaped; legitimate bucket rule maxes at ~real+128 above 256.
- Validates each WrapSlot.read_ciphertext / sign_ciphertext is
  exactly 48 bytes (matches seal_wrap_slot's output).
- Caps revocation_list at MAX_FOF_REVOCATION_LIST=4096.
- Bad posts never enter storage, never get re-propagated via
  neighbor-manifest diffs.

Fix 2 (fof::validate_fof_closed_has_gating):
- FoFClosed visibility + None gating is an invariant violation.
  Rejected at the same receive boundary.

Fix 3 (storage::record_unreadable_post):
- Per-persona cap of MAX_UNREADABLE_PER_PERSONA=4096. Above the cap,
  new posts get last_attempt_ms touched if already present but no
  new INSERT. Bounds sweep-on-V_x-arrival cost.

7 new tests bring the suite to 157:
- validate_rejects_length_mismatch / oversized_slots / wrong_ciphertext
- validate_accepts_well_formed_gating / post_without_gating
- validate_fof_closed_requires_gating
- unreadable_queue_is_capped

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-14 20:23:11 -06:00
Scott Reimers
12a305889e feat(fof-layer5): unlock cache + retry sweep + author-direct fast path
Three new tables + cache/sweep wiring per docs/fof-spec/
layer-5-prefilter-and-cache.md:

vouch_unlock_cache (reader_persona, author) -> winning V_x
- Records the V_x that last unlocked a post from this author. Next
  post from same author: hot path is 1 HMAC + 1 AEAD attempt.

vouch_unreadable_posts (reader_persona, post_id)
- Queue of FoF posts that no held V_x currently unlocks. Swept when
  a new V_x lands in the persona's keyring.

own_fof_post_ceks (author_persona, post_id) -> (CEK, slot_binder_nonce)
- Author-direct decrypt fast path. Populated at publish so authors
  skip wrap-slot trial entirely when reading their own posts.

find_unlock_for_post:
- Cache fast path: look up winning V_x, prefilter, single AEAD.
- Full scan fallback on cache miss; record cache hit on success;
  record unreadable on full miss.

read_fof_closed_body:
- Author-direct fast path: lookup_own_fof_post_cek before trial-unlock.

sweep_unreadable_on_new_v_x:
- Walks ALL unreadable for the persona (the new V_x can unlock posts
  authored by anyone — the V_x owner may be a chain-link in some
  third party's keyring). Wired into the vouch-grant scan path so
  every new V_x triggers a sweep automatically.

Both FoF publish paths (Mode 1 + Mode 2) now cache CEK at publish.

Bug fix found by the sweep test: storage::get_post_with_visibility
wasn't loading fof_gating_json (always returned None). Fixed; reader
paths through that function now see the gating block.

16 fof:: tests pass (2 new: cache populates+hits, sweep after V_x
arrival). 150 total tests pass.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-14 19:29:12 -06:00
Scott Reimers
ce710a6596 feat(fof-layer4): Tauri commands + Settings "Rotate my vouch key" UI
Three new Tauri commands surface Layer 4 to the frontend:

- rotate_v_me() -> { newEpoch }: generates next V_me epoch +
  republishes bio. Old epoch retained in vouch_keys_own; existing
  vouchees receive the new key on their next bio-scan.
- cascade_revoke_v_me_epoch(retired_epoch, reason_code) ->
  { postsRevoked }: bulk per-post revocation across every author
  post that sealed slots under (self, retired_epoch). Useful as a
  follow-up after rotate_v_me when the author wants to actively
  cut off comment access on old posts.
- key_burn_post_slot(post_id_hex, slot_index, new_v_x_hex): the
  leaked-V_me primitive. Re-seals one slot under a different V_x.

Frontend (Settings → Vouches):
- New "Rotate my vouch key" button + status pill below the Given /
  Received lists.
- Confirmation prompt explains the grandfather-by-default semantics:
  "old posts remain readable to anyone who held the old key — cascade-
  revoke separately if you want to cut off old-content access."
- Wired once per settings-tab activation.

Cascade-revoke and key-burn surfaces aren't visualized yet (require
per-post selection UI); the Tauri commands are available for follow-up
UI work or scripting via the desktop dev console.

Workspace builds clean; 148 tests pass.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-14 19:18:31 -06:00
Scott Reimers
fdbf97f2d7 feat(fof-layer4): supersedes_post_id field on Post
Adds an optional supersedes_post_id pointer to Post for the
"re-issue with narrower access" path. Author publishes a new post
that references an earlier one; receivers can render "this is a
re-issued version of an earlier post" + offer to view the original.

Covered by PostId = BLAKE3(Post) — receivers can verify it wasn't
forged by anyone but the author.

#[serde(default)] for back-compat; existing posts deserialize with
None. All existing Post construction sites bulk-updated to set the
field to None.

Storage::get_post returns None for the field today; a follow-up can
add a dedicated column if/when receivers need to render the
pointer. The author-side re-issue helper that creates posts with
this field set comes in the Tauri/UI slice — the wire shape is in
place now.

148 tests pass (no regressions).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-14 16:29:55 -06:00
Scott Reimers
c2f2203331 feat(fof-layer4): FoFKeyBurn primitive — in-place wrap_slot replacement
For leaked-V_me scenarios. The author re-seals a single slot under a
fresh V_me, invalidating the leaked key's access to this specific
post on the wire. Comments signed under the old pub_x at that slot
are NOT auto-deleted; pair with revoke_fof_commenter if comment
cleanup is desired.

Wire format (BlobHeaderDiffOp::FoFKeyBurn):
  post_id, slot_index, new_pub_x, new_wrap_slot, burned_at_ms,
  author_sig (64B ed25519 over canonical tuple).

fof.rs:
- sign_fof_key_burn / verify_fof_key_burn: canonical signing tuple
  includes post_id, slot_index_le, new_pub_x, prefilter+read+sign
  bytes from WrapSlot, burned_at_ms_le. Identical shape to access-
  grant but with slot_index instead of append.
- apply_fof_key_burn_locally: delegates to storage.replace_fof_slot.

storage.rs:
- replace_fof_slot(post_id, slot_index, new_pub_x, new_wrap_slot):
  mutates the stored post's fof_gating_json. Bounds-checks slot_index.
  Local-only; PostId unaffected.

connection.rs: receive arm. Verifies author_sig + applies.

node.rs:
- Node::key_burn_post_slot(post_id, slot_index, new_v_x): recovers
  CEK via find_unlock_for_post, generates fresh per-V_x keypair,
  seals new slot under new_v_x with the existing CEK +
  slot_binder_nonce. Signs + applies locally + propagates.

CEK is NOT rotated by this op — body remains encrypted under the
same CEK as before. Locally-cached plaintext on devices that
already-decrypted is unrecoverable by any wire mechanism (out of
scope per spec).

Test brings the total to 147:
- fof_key_burn_replaces_slot: Alice burns her slot from V_me_old to
  V_me_new; V_me_old no longer unlocks; V_me_new unlocks and yields
  the same CEK; pub_post_set updates to the new pub_x.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-14 16:20:26 -06:00
Scott Reimers
c0de21d37b feat(fof-layer4): provenance table + pure V_me rotation + cascade revoke
Lays the foundation for Layer 4 lifecycle operations:

Storage (own_post_slot_provenance):
- New author-local table mapping (post_id, slot_index) to
  (v_x_owner, v_x_epoch, pub_x). Populated at FoF post-publish.
  Used by cascade revocation to find the pub_x's that need revoking
  when a V_me epoch is retired. Never on the wire.
- record_post_slot_provenance + list_provenance_for_v_x_epoch APIs.

fof::build_fof_comment_gating now returns RealSlotProvenance entries
for each real (non-dummy) slot it sealed. Owner = persona who issued
the V_x (author's own persona_id for self-slot). Both Mode 1 and
Mode 2 publish paths persist provenance after compute_post_id.

Node API:
- rotate_v_me() — pure rotation. Generates next V_me epoch in
  vouch_keys_own (old epoch retained, is_current=0), republishes bio
  for existing vouch targets. Returns new epoch. Used for periodic
  refresh / leak response; doesn't revoke anyone.
- cascade_revoke_v_me_epoch(epoch, reason) — for every post the
  author authored where slots were sealed under (self, epoch),
  publish a per-pub_x revocation diff via revoke_fof_commenter. The
  existing Layer 2 cascade-delete then sweeps locally-stored comments.
  Returns the count of revocations published.

These combine to give the spec's "rotation + optional cascade" UX:
rotate first (cheap, grandfathers old posts), then cascade if the
user wants to actively cut off old-content access.

13 fof tests pass (new: fof_gating_real_slot_provenance asserting
provenance entries match real slots' pub_x values).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-14 16:17:47 -06:00
Scott Reimers
66b78041fc feat(fof-layer3): Mode 1 publish + read + Tauri + UI wiring
End-to-end FoFClosed (Mode 1: encrypted body + FoF comments):

Node API:
- create_post_fof_closed(content) -> (PostId, Post, cek)
  Builds gating, encrypts body via fof::encrypt_fof_body, base64s it
  into post.content, stores with visibility=FoFClosed +
  intent=Public, propagates via update_neighbor_manifests_as.
- read_fof_closed_body(post_id) -> Option<String>
  Trial-unlocks via find_unlock_for_post, decrypts body, returns
  plaintext. Returns None for non-FoFClosed or non-member readers.

Tauri commands:
- create_post_fof_closed, read_fof_closed_body. Registered in
  generate_handler!.

Feed rendering:
- PostDto.visibility carries the new "fof-closed" string.
- renderPost(): FoFClosed posts render with a locked placeholder
  (data-fof-closed-pending=post_id span). Visual badge added.
- unlockFoFClosedPlaceholders(rootEl): post-render async pass that
  scans for placeholder spans and dispatches read_fof_closed_body
  for each. Fills in body for FoF readers; falls back to a
  "not in this FoF set" notice otherwise.
- Wired into feed-list and my-posts-list render paths.

Compose:
- "Body+Comments: FoF only (Mode 1)" option in comment-perm-select.
  Selected → dispatches to create_post_fof_closed.

CLI feed renderer + Tauri feed-DTO match arms updated to handle
FoFClosed.

New end-to-end test brings total to 146:
- fof_closed_body_end_to_end: Alice authors FoFClosed body; Bob (with
  Alice's V_me in his keyring) unlocks + decrypts; Carol (no
  matching V_x) cannot unlock and sees only ciphertext.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-14 15:19:42 -06:00
Scott Reimers
856f386231 feat(fof-layer3): PostVisibility::FoFClosed + body crypto + bucket padding
Adds the Mode 1 (encrypted body) primitives:

PostVisibility::FoFClosed
- New tag variant. The actual gating data (slot_binder_nonce,
  pub_post_set, wrap_slots) lives in Post.fof_gating — single source
  of truth shared between Mode 2 (Public + fof_gating) and Mode 1
  (FoFClosed + fof_gating). Invariant: FoFClosed implies Some(gating).

fof::encrypt_fof_body / decrypt_fof_body
- ChaCha20-Poly1305 under the gating CEK with slot_binder_nonce as
  AAD (binds body decrypt to the post's gating; an attacker who
  steals CEK can't reuse it against a different post).
- Plaintext format: real_len_u32_le || body_bytes || random_padding.
  Length prefix lets the reader strip padding after decrypt.
- Bucketed body padding: power-of-2 from 1KB up to 256KB, then
  +256KB linear above. Different bodies in the same bucket produce
  identically-sized ciphertexts (test asserts this).

fof::next_body_size_bucket(real) -> usize
- Min 1KB, power-of-2 to 256KB, then +256KB steps. Aligns with the
  future storage chunk size at 256KB+.

Three new tests (145 total):
- body_bucket_rule_boundaries: spec-conformance for the bucket sizes.
- fof_body_roundtrip: encrypt → decrypt; wrong CEK rejects; wrong AAD
  (slot_binder_nonce) rejects.
- fof_body_padding_hides_real_length: 5B body and 500B body produce
  same-sized on-wire ciphertexts (1KB bucket).

8 match arms updated to handle FoFClosed across import, network, node,
storage. Most paths skip FoFClosed-specific handling (it goes through
the FoF wrap_slot path); revoke_post_access bails with a pointer to
the FoF revoke helpers; index_post_recipients no-ops (FoF has no
per-recipient identifiers on the wire).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-14 16:22:46 -04:00
Scott Reimers
10de3f6108 feat(fof-layer2): Tauri commands + frontend compose/comment routing
Three new Tauri commands surface Layer 2 to the frontend:

- create_post_with_fof_comments(content) → { postId }
  Builds the FoF gating block from the default persona's keyring and
  publishes a Mode 2 post (public body, FoF-gated comments).
- comment_on_fof_post(post_id_hex, body)
  Backwards-compat wrapper: comment_on_post now auto-detects FoF
  gating on the parent post and dispatches internally. Existing
  comment-send UI works unchanged.
- revoke_fof_commenter(post_id_hex, pub_x_index, reason_code)
  Wraps the Node helper. UI for per-comment revocation can hang off
  this without further Node changes.

Node::comment_on_post now branches on parent post fof_gating presence
— this is the central routing point so neither the frontend nor
existing comment-send code needs to know about FoF specifics. FoF
posts get FoF comments automatically; non-FoF posts get the legacy
path. Same Tauri command, same frontend handler.

Frontend:
- Compose: comment-perm-select gains a "Friends of Friends" option.
  When picked, compose dispatches to create_post_with_fof_comments
  instead of the standard create_post. Standard set_comment_policy
  diff fires after so receivers' four-check accept rule activates.
- Attachments + non-default-persona FoF posts are out-of-v1; compose
  reports + aborts rather than silently producing a non-FoF post.

Layer 2 backend + minimal-viable UI complete. Granular per-comment
revoke UI and access-grant UI deferred — Node + Tauri primitives
exist; the surfaces can be added without further crypto work.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-14 16:07:07 -04:00
Scott Reimers
96118d7ce8 feat(fof-layer2): access-grant — retroactive read+comment widening
Wires the access-grant primitive end-to-end:

Wire format:
- BlobHeaderDiffOp::FoFAccessGrant { post_id, new_pub_x,
  new_wrap_slot, granted_at_ms, author_sig }. 64-byte Ed25519 sig
  by post author over canonicalized tuple.

fof.rs:
- sign_fof_access_grant / verify_fof_access_grant: identical shape
  to revocation but covers (pub_x, wrap_slot, granted_at).
- apply_fof_access_grant_locally: appends to local pub_post_set +
  wrap_slots. Refuses to apply if new_pub_x is already revoked
  (prevents accidental re-admission of a previously-blocked signer
  per Layer 4 resolved decision). Idempotent on (post_id, new_pub_x).

storage.rs:
- append_fof_access_grant(post_id, new_pub_x, new_wrap_slot): mutates
  the stored post's fof_gating_json column to append the new entry.
  PostId (in id column) is unaffected — local-evolution semantics:
  the stored gating diverges from the original t=0 snapshot as
  access-grants and revocations land.

connection.rs: receive arm verifies author_sig + applies locally.

Author API (node.rs):
- Node::grant_fof_access(post_id, new_v_x): recovers the post's CEK
  by trial-unwrapping the author's own slot (find_unlock_for_post),
  generates a fresh per-V_x keypair, seals a new wrap slot under
  new_v_x with the same CEK + slot_binder_nonce, signs the grant,
  applies locally for immediate UI, then propagates via
  propagate_engagement_diff.

New test brings the suite to 142 passing:
- fof_access_grant_appends_and_unlocks: pre-grant Carol cannot
  unlock; Alice grants; post-grant Carol unlocks and recovers the
  CEK; duplicate grant skipped; revoked pub_x cannot be re-admitted.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-14 15:07:54 -04:00
Scott Reimers
6a76adef8f feat(fof-layer2): revocation diff — sign + verify + propagate + cascade
Wires the full revocation primitive end-to-end:

Wire format:
- BlobHeaderDiffOp::FoFRevocation { post_id, revoked_pub_x,
  revoked_at_ms, reason_code, author_sig }. 64-byte Ed25519 sig by
  post author over (post_id || revoked_pub_x || ms_le || reason).

fof.rs additions:
- sign_fof_revocation(author_secret, ...): builds the canonical
  signing tuple and signs.
- verify_fof_revocation(post_author, ...): Ed25519 verify; false on
  any shape/key/sig failure. CDN-verified before any side effect.
- apply_fof_revocation_locally(storage, ...): records in
  fof_revocations + cascades retroactive delete of locally-stored
  comments matching the revoked pub_x via pub_post_set lookup.

Receive path (connection.rs): new arm for FoFRevocation diffs.
Looks up post.author from storage, verifies author_sig (rejects
diffs where payload.author != post author or sig invalid), then
applies locally. Propagation continues via existing mechanism.

Author API (node.rs): Node::revoke_fof_commenter(post_id,
pub_x_index, reason_code) resolves pub_x from gating.pub_post_set,
signs with the persona's identity secret, applies locally for
immediate UI update, then propagates via propagate_engagement_diff.

Two new fof tests bring the suite to 141 passing:
- fof_revocation_cascades: full author → publish → commenter →
  revoke → cascade-delete + recorded-in-storage roundtrip.
- fof_revocation_wrong_author_rejected: Mallory signs claiming
  Alice's authorship → verify rejects.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-14 14:59:23 -04:00
Scott Reimers
583033e065 feat(fof-layer2): persist FoF fields + revocation table
Storage now persists the FoF Layer 2 wire fields across restarts:

posts.fof_gating_json
- JSON-serialized FoFCommentGating, added via migration to existing
  DBs. get_post / store_post / store_post_with_visibility /
  store_post_with_intent all roundtrip the field.

comments.{pub_x_index, group_sig, encrypted_payload}
- Added via migration. store_comment writes them; get_comments reads
  them back. Old non-FoF comments deserialize to None for all three.

fof_revocations (new table)
- (post_id, revoked_pub_x, revoked_at_ms, reason_code, author_sig)
- Local live state. Distinct from the post's snapshot
  fof_gating.revocation_list (rarely populated on publish).

New storage methods:
- add_fof_revocation(...): idempotent insert.
- is_fof_pub_x_revoked(post_id, pub_x): cheap COUNT for CDN-verify.
- list_fof_revocations(post_id): batch read.
- delete_fof_comments_by_pub_x_index(post_id, pub_x_index): cascade
  delete for the receive-side revocation handler (next slice).

CDN four-check gate in connection.rs now consults BOTH the post's
snapshot revocation_list and the live fof_revocations table.

139 tests pass.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-14 14:51:02 -04:00
Scott Reimers
63ff5ad6eb feat(fof-layer2): CDN four-check verification on incoming FoF comments
Wires the propagation-side accept rule per
docs/fof-spec/layer-2-mode2-fof-comments.md. When a BlobHeaderDiffOp::
AddComment arrives for a post whose CommentPolicy.allow_comments is
FriendsOfFriends, the receive path now:

1. Looks up the parent post in storage. If the post lacks fof_gating,
   drop (policy says FoF but no key material to verify against).
2. Calls fof::verify_fof_group_sig (which folds together: valid
   pub_x_index range + Ed25519 verify of group_sig against
   pub_post_set[pub_x_index] over the binding tuple).
3. Checks pub_post_set[pub_x_index] is NOT in fof_gating.revocation_list
   (initially empty; revocation diffs land in a future slice but the
   check is in place now).
4. Continues to the existing identity_sig verify step.

Any failure → continue (drop, don't store, don't forward). This kills
the bandwidth-amplification DoS that a single admitted FoF member
could otherwise mount by spamming forged group_sigs.

Receive-side storage of FoF comments is via the existing
storage.store_comment call; the InlineComment shape carries the FoF
fields (pub_x_index, group_sig, encrypted_payload) through unchanged.

139 tests pass (relay_cooldown flake is pre-existing and unrelated).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-14 14:06:34 -04:00
Scott Reimers
00522f4c4b feat(fof-layer2): reader unlock + commenter authoring + sig verify
Adds the reader/commenter side of FoF Layer 2 in crates/core/src/fof.rs:

- find_unlock_for_post(storage, post): scans every persona × every
  held V_x (own V_me + received) against the post's wrap_slots using
  the 2B prefilter tag. Returns first successful unlock as a
  PostUnlock { persona_id, slot_index, cek, priv_x_seed }.

- FoFCommentPayload: serializable inner-plaintext shape (body +
  parent_comment_id + optional vouch_mac). Wrapped under CEK_comments
  inside InlineComment.encrypted_payload.

- build_fof_comment(parent_post_id, unlock, slot_binder_nonce,
  commenter_id, commenter_secret, body, parent_comment_id, now_ms)
  → InlineComment: encrypts the body under CEK_comments, signs
  (encrypted_payload || post_id || pub_x_index_le) with priv_x for
  group_sig, signs the conventional comment tuple with commenter's
  identity key, fills pub_x_index from the unlock.

- verify_fof_group_sig(comment, gating): CDN-level Ed25519 verify of
  group_sig against pub_post_set[pub_x_index]. Returns false on any
  shape/index/key/signature failure. Used by the four-check accept
  rule (next slice).

- decrypt_fof_comment_payload(comment, cek, slot_binder_nonce): inverse
  of build_fof_comment's encryption step. Used by authors with cached
  CEKs and by readers who just unlocked.

End-to-end roundtrip test covers: Alice publishes Mode 2 FoF post with
Bob's V_x in the gating; Bob's device unlocks via his V_me; Bob
authors a comment; verify_fof_group_sig accepts it; tampered payload
and wrong pub_x_index both reject; Alice decrypts the payload.

138 → 139 tests pass.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-14 14:04:22 -04:00
Scott Reimers
673f9e2261 feat(fof-layer2): wire FoF gating into post-create path
Threads optional fof_gating through create_post_inner so a published
post can carry the author-signed gating snapshot at publish time
(covered by PostId = BLAKE3(Post)).

New public entry point:

  Node::create_post_with_fof_comments(content, attachments)
      -> (PostId, Post, PostVisibility, cek: [u8; 32])

Builds the FoFCommentGating block via fof::build_fof_comment_gating
from the default persona's keyring (own V_me + every received V_x),
then calls create_post_inner with VisibilityIntent::Public (Mode 2
keeps body public). Returns the per-post CEK to the caller for local
caching (decrypting one's own comments later).

Existing create_post / create_post_as / create_post_with_visibility
threads `None` through the new arg — back-compat for non-FoF posts.

CommentPolicy::FriendsOfFriends is NOT published as a SetPolicy diff
in this commit; the post's `fof_gating` field is itself the signal
that the post supports FoF commenting. The four-check CDN verify gate
(next commit) reads fof_gating directly.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-14 14:01:57 -04:00
Scott Reimers
bdcd2142cd feat(fof-layer2): author publish-side build_fof_comment_gating
New crates/core/src/fof.rs module owns the author-side FoF Layer 2
publish path:

- build_fof_comment_gating(storage, author_persona_id): gathers the
  author's keyring (own current V_me + every distinct received V_x),
  generates a fresh CEK + slot_binder_nonce, generates a fresh per-V_x
  (priv_x, pub_x) Ed25519 keypair per real slot, seals each slot, pads
  with random-bytes dummies to the next bucket (min 8, power-of-2 to
  256, +128 above per Layer 3), shuffles real + dummy together, and
  returns the FoFCommentGating wire block + author-local CEK + the
  slot_binder_nonce.

- Dedup at V_x byte level: a key held under multiple owners produces
  exactly one slot.

- next_vouch_batch_bucket promoted to pub(crate) in profile.rs so the
  Layer 2 fof module can reuse the bucket rule from Layer 3.

Three unit tests cover:
- Real-count + padding + roundtrip (Alice's own V_me unlocks her slot;
  Bob's V_x unlocks his slot; both yield same CEK).
- No V_me → returns None (graceful).
- Duplicate V_x bytes across owners are deduped (single slot).

134 → 138 tests pass (no regressions).

Subsequent slices wire this into the post-create path, add the
reader/commenter side, the CDN four-check verification, and the
revocation/access-grant diff handlers.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-14 13:50:56 -04:00
Scott Reimers
0f5147a31c feat(fof-layer2): wire types — WrapSlot, FoFCommentGating, CommentPermission::FriendsOfFriends
Adds the on-wire shapes for FoF Mode 2 comment-gating per
docs/fof-spec/layer-2-mode2-fof-comments.md:

- WrapSlot: per-V_x slot with 2B prefilter_tag + 48B read_ciphertext
  + 48B sign_ciphertext (sealed CEK + sealed priv_x_seed). 98 bytes
  total per slot. Receiver trial-decrypts via prefilter match.

- FoFCommentGating: author-published gating block embedded in
  Post.fof_gating. Carries slot_binder_nonce (32B random; replaces
  spec's circular "post_id in HKDF info"), pub_post_set (1:1 with
  wrap_slots, includes dummy pubkeys), wrap_slots, and revocation_list
  (initially empty; revocation diffs accumulate on the BlobHeader copy).

- RevocationEntry: author-signed entry triggering retroactive comment
  delete + pub_post_set removal on every file-holder that receives it.

- CommentPermission gains FriendsOfFriends variant. Existing match arm
  in connection.rs handle-incoming-diff path is extended with a
  "drop pending CDN four-check verification" stub (full verify in a
  later slice).

- InlineComment extended with three optional fields:
    pub_x_index: index into parent post's pub_post_set
    group_sig: 64B ed25519 sig under priv_x
    encrypted_payload: ChaCha20-Poly1305 ciphertext under CEK_comments
  All #[serde(default)] for back-compat. Old comments deserialize
  cleanly with None.

- Post gains optional fof_gating field for the author-signed snapshot
  at publish time. PostId = BLAKE3(Post) covers it, so any tampering
  is detectable. Mutations (revocation, access-grant) arrive later as
  diffs against the local BlobHeader copy.

All 21 existing Post construction sites + 4 existing InlineComment
sites updated via perl -0pe sweeps to pass None for the new fields.
Full test suite: 134/134 pass (4 new slot crypto + 130 existing).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-14 13:39:46 -04:00
Scott Reimers
74fec3b1fb feat(fof-layer2): wrap-slot dual-derivation seal/open primitives
Foundational crypto for FoF Mode 2 (public body + FoF-gated comments)
and Mode 1 (FoFClosed; later). Implements the dual-derivation wrap
slot from docs/fof-spec/layer-2-mode2-fof-comments.md:

- Each slot is sealed under one V_x and dual-derived:
    read part  → 32B CEK    (read capability for the post)
    sign part  → 32B priv_x (per-V_x signing capability)
- Both halves use ChaCha20-Poly1305 with deterministic key+nonce
  derived from (V_x, slot_binder_nonce) via blake3::derive_key with
  distinct sub-contexts. Receiver trial-decrypts: success on both
  halves yields OpenedWrapSlot{cek, priv_x_seed}.
- 2-byte prefilter tag = blake3-derive("...prefilter", nonce||V_x)[..2].
  Receivers precompute one per held V_x per post; skip non-matching
  slots entirely. Cuts trial-decrypt cost by ~2^16.

slot_binder_nonce (32B random per-post) replaces the spec's literal
"post_id in HKDF info" — PostId = BLAKE3(post) would be circular here.
Same anti-replay property: unique per publish, recipient-free, in the
post header in plaintext.

Also adds derive_cek_comments(cek, slot_binder_nonce) for the
comment-body encryption key (distinct from the post body CEK; lets
Mode 2 keep body public but comments private).

4 unit tests: slot roundtrip, wrong-binder-fails, prefilter tag
stability + keying, cek_comments distinct-per-post.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-13 07:16:42 -04:00
Scott Reimers
34c5b60686 feat(fof-layer1): Tauri commands + frontend UI for vouches
Node helpers (crates/core/src/node.rs):
- vouch_for_peer(target): derives target X25519 pub from NodeId,
  inserts into own_vouch_targets, republishes bio post so the new
  VouchGrantBatch propagates to the receiver via CDN.
- revoke_vouch_and_rotate(target): per Scott's design, revocation IS
  the rotation primitive. Marks target current=0, generates new V_me
  epoch in vouch_keys_own (prior retained, Layer 4 receiver-chain),
  republishes bio. Revoked persona retains old V_me → grandfathered
  access to old content; locked out of new content sealed under V_new.
- list_vouches_given / list_vouches_received: enriched with display
  names via resolve_display_name.

Tauri commands (crates/tauri-app/src/lib.rs):
- vouch_for_peer, revoke_vouch_for_peer (single-action commands)
- list_vouches_given, list_vouches_received (DTOs with camelCase)
- All registered in the generate_handler! list.

Frontend (frontend/index.html + app.js):
- New "Vouches" section in Settings tab with side-by-side Given /
  Received lists. Per-row Revoke button on Given entries with confirm
  prompt explaining the rotation semantics.
- Bio modal gains Vouch / Revoke Vouch button next to Follow/Unfollow.
  State derived from list_vouches_given on modal open.
- loadVouches wired into the settings-tab activation handler.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-13 06:47:18 -04:00
Scott Reimers
d1afcec26a feat(fof-layer1): receive-path scan populates vouch_keys_received
Wires the receive side of Layer 1 vouch distribution:

- profile::scan_vouch_grants_for_all_personas reads the VouchGrantBatch
  from an incoming profile post, trial-decrypts each wrapper against
  every persona's X25519 private scalar, and inserts successful unlocks
  into vouch_keys_received. Idempotent via the bio_scan_cache.

- apply_profile_post_if_applicable now calls the scan before the
  timestamp-based last-writer-wins short-circuit on display_name/bio.
  A profile post that arrives "older" than what we've stored can still
  carry vouch grants we haven't seen — bio_epoch is the actual
  freshness signal for the wrapper batch.

- Follow-gated per the spec: skipped if the bio author isn't in
  follows. Self-authored posts skipped (we already have our own V_me).

- storage::is_follow helper added (cheap COUNT membership check).

Two new integration tests cover the wire:

- vouch_grant_end_to_end_via_bio_post: Bob's signed profile post
  carries a real wrapper for Alice + 7 dummies; Alice's keyring picks
  up V_bob and the scan cache records the hit.

- vouch_grant_skipped_for_non_followed_author: same post, but Alice
  doesn't follow Bob → no scan, no keyring entry.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-13 01:44:54 -04:00
Scott Reimers
3ee5c30ad2 feat(fof-layer1): publish path embeds VouchGrantBatch
Wires the publish side of FoF Layer 1 vouch distribution:

- VouchGrantBatch gains bio_pub_nonce (32B random per batch). Replaces
  the spec's circular "bio_post_id in HKDF info" — BLAKE3(post)
  depends on vouch_grants, so we need a content-independent binder.
  Recipient-free per HPKE key-privacy; serves the same anti-replay
  purpose as bio_post_id would have.

- profile::build_vouch_grant_batch reads current_own_vouch_key +
  list_current_vouch_targets, generates eph keypair + bio_pub_nonce,
  seals V_me for each target, bucket-pads with random 48B dummies,
  and shuffles. Returns None when there are no targets.

- next_vouch_batch_bucket implements the FoF Layer 3 padding rule:
  minimum bucket 8, power-of-2 up to 256, then linear +128 steps.
  Bucket-padding-tests verifies all boundaries.

- Storage gains next_bio_epoch_for(persona_id): monotonic counter
  per persona, used by receivers' scan cache. Stored in settings.

- build_profile_post signature extended to take Option<VouchGrantBatch>
  + bio_epoch: u32. Both publish_profile_post_as (initial post) and
  set_profile (subsequent edits) build the batch and bump the epoch
  on every publish.

- Test sites updated to pass None/0 for the new args.

Receive-side scan (next commit) reads VouchGrantBatch + bio_pub_nonce
to trial-decrypt wrappers and populate vouch_keys_received.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-13 01:39:09 -04:00
Scott Reimers
bc008c5049 feat(fof-layer1): wire types + V_me auto-gen on persona creation
Adds VouchGrantBatch type to types.rs and extends ProfilePostContent
with optional vouch_grants + bio_epoch fields (back-compat via
#[serde(default)]). VouchGrantBatch carries one shared batch_eph_pub
+ a Vec<Vec<u8>> of 48-byte wrappers; receivers identify their wrapper
by AEAD success, not position.

Wires V_me auto-generation into both persona-creation paths:
- Node::open first-run auto-persona block now seeds vouch_keys_own
  epoch=1 alongside upsert_posting_identity.
- create_posting_identity calls ensure_initial_v_me after the new
  persona is stored.

Helpers live as private free functions at module scope so both the
sync (Node::open holds a Storage guard) and async (create_posting
holds a StoragePool) sites can share them. Idempotent — re-running
on a persona that already has a current key is a no-op.

Two existing ProfilePostContent construction sites updated to set the
new fields to defaults (None / 0); they'll get real values when the
publish path is wired up in the next commit.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-13 01:35:19 -04:00
Scott Reimers
8a53d83306 feat(fof-layer1): schema + storage API + vouch-grant crypto primitives
Lands the foundational pieces for FoF Layer 1 (vouch primitive) per
docs/fof-spec/layer-1-vouch-primitive.md:

Schema (init_tables, CREATE TABLE IF NOT EXISTS — safe for upgrade and
fresh installs):
- vouch_keys_own: per-persona V_me history, append-only on rotation
- vouch_keys_received: per-persona inbound keyring, multi-epoch
- vouch_bio_scan_cache: short-circuits unchanged-bio re-scans
- own_vouch_targets: author-local, never on wire, drives batch assembly

Storage API: insert/list/lookup for all four tables, including
current_own_vouch_key, list_received_vouch_keys, list_vouchers_for,
record_bio_scan_result, upsert/revoke_vouch_target.

Crypto: HPKE-style seal_vouch_grant / open_vouch_grant using existing
ed25519 → X25519 derivation. Per-batch ephemeral X25519 keypair via
generate_vouch_batch_ephemeral. Wrapper is 48B (32B sealed V_me + 16B
AEAD tag). Recipient-free derivation context per spec — info string
is "itsgoin/vouch-grant/v1/{key|nonce}/<bio_post_id>". 3 unit tests
cover roundtrip + wrong-post-id + random-bytes-as-dummy.

No behavior change yet; nothing wired in. Layer 1 wire types, persona
auto-gen, publish/scan paths follow in subsequent commits.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-13 01:29:43 -04:00
Scott Reimers
d7ce2f734c docs(design.html): add section 20a Friend-of-Friend Visibility
Public-facing architecture description of the FoF post-gating system
specified in docs/fof-spec/. Sits between section 20 (Encryption) and
section 21 (Delete Propagation). All subsections marked badge-planned.

Covers the user-facing 4-level visibility model, V_me primitive,
bio-post HPKE distribution, dual-mode operation (public-body+FoF-
comments vs FoFClosed), CDN-level comment verification, bucketed
padding scheme, revocation/rotation/key-burn lifecycle, PQ-readiness,
and the five ship-able layers.

Visibility variants table updated with the new FoFClosed row.

Disambiguation note added at top of section 20a noting this "vouch"
is the cryptographic V_me primitive, distinct from the directory
vouches in section 27. Reciprocal disambiguation note added at top
of section 27 pointing the other direction.

TOC entry added.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-13 01:20:43 -04:00
Scott Reimers
73b1e24f9a docs: spec cleanup — Layer 5 wording, Layer 3 banner, Layer 6 superseded
Layer 5: replace two priv_post references in author-direct fast path
with the correct per-V_x CEK + priv_x lookup. Cache/prefilter logic
unchanged.

Layer 3: replace the "partially superseded" warning banner with a
plain scope note explaining the Mode 1/Mode 2 distinction reduces to
"body encrypted vs body plaintext"; wrap-slot canonical form lives in
Layer 2.

Layer 6: mark as superseded by Layer 4. README updated to match.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-13 01:10:43 -04:00
Scott Reimers
971766cb3c docs: Layer 4 — rotation, revocation, key lifecycle
Captures the decisions from the Layer 4 conversation with Scott:

Default narrowing on a single post = Layer 2 revocation (existing).
Advanced narrowing of read access = full re-issue with optional
supersedes_post_id link (network-heavy, opt-in).

V_me rotation = the persona-wide revocation primitive. Generate new
V_me, distribute to non-revoked vouchees via next bio-post batch.
Receiver-chain model: receivers append new V_me alongside old (not
overwrite). Trial-unwrap iterates the chain.

Grandfather by default: CDN is V_me-blind, so rotation does NOT
auto-cascade comment deletions. Revoked vouchee retains comment
authority on old posts unless author opts to cascade per-pub_x
revocations.

Per-post cascade is opt-in. Local-only own_post_slot_provenance
table lets author query "which pub_x's in my posts were sealed
under V_me_old?" and publish per-pub_x RevocationEntries.

New optional KeyBurnDiff primitive (signed header-diff) swaps a
V_me_old wrap_slot for a V_me_new one in-place on a specific post.
For the leaked-V_me scenario. Body CEK unchanged.

Skeleton's PostKeyRotation record removed entirely.

Layer 1 updated: rotation is append-only at receivers; pointer to
Layer 4. Multi-epoch bio-post-batch toggle hook added.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-13 01:07:04 -04:00
Scott Reimers
4123e032cb docs: Layer 3 round 2 — append-at-tail grants, min bucket 8
Resolve the two remaining Layer 3 open questions:
- Access-grant ordering: append at tail. pub_x_index values in
  already-stored comments stay valid; no write amplification. Tail-
  is-recent positional leak is the accepted cost (vs re-shuffle which
  would force comments to reference signers by 32B pub_x bytes).
- Minimum slot bucket: 8. Singleton posts pad up to 8 so brand-new
  personas don't publish "no vouchees" headers.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-12 21:58:06 -04:00
Scott Reimers
9040d70bf6 docs: correct padding rule — bucketed throughout, not random above 256
Prior round misread Opus's recommendation: I wrote "rand(0..=256) above
256" for slots and "round up to nearest 256KB above 256KB" for body.
Body was right; slots were wrong. Correct rule: bucketed throughout.

Slot buckets: 8, 16, 32, 64, 128, 256 (power-of-2 sub-256), then
384, 512, 640, 768, ... (+128 steps above).

Body buckets: 1KB, 2KB, ..., 256KB (power-of-2 sub-256KB), then 512KB,
768KB, 1024KB, ... (+256KB steps above; aligns with future chunk size).

Stronger privacy than random: observer learns bucket, never position
within it. Stable across posts; no min-over-many-posts floor attack.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-12 21:47:44 -04:00
Scott Reimers
3ee20736aa docs: Layer 3 round 1 + unified hybrid padding rule
Hybrid padding rule (slots + body, same shape):
- <=256 real units: pad to next power of 2 (8, 16, ..., 256)
- >256 real units: pad to real + rand(0..=256) / nearest 256KB

Replaces Layer 2 round 2's rand(32..=128). Small authors/posts get
strong bucket-grouping; large authors/posts get probabilistic noise
without 2x bandwidth waste of pure power-of-2 at scale.

Layer 3 resolutions:
- Custom mode deferred; v1 ships Public / Friends-only / FoF only
- Slot dedup at V_x byte level (one slot per unique key)
- Body-length padding adopted

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-12 21:43:11 -04:00
Scott Reimers
a79cab049f docs: Layer 2 round 2 — resolve 5 questions + access-grant primitive
Fold in Scott's answers:
- Per-post (pub_x, priv_x); confirmed.
- Random rand(32..=128) dummy padding replaces power-of-2 buckets;
  dummy pubkeys in pub_post_set so .len() == wrap_slots.len(). Floor
  count is unrecoverable across multiple posts.
- Non-FoF UX: "Comments are private" + optional "Request access via
  DM" button. No count leak.
- Author's own (pub_me, priv_me) in pub_post_set; confirmed.
- Revocation is retroactive delete + forward: file-holders delete
  locally-stored comments signed by revoked pub_x on diff arrival,
  then propagate. Stronger than stop-forwarding.

New primitive: access-grant author comment. Author appends a
WrapSlot + pub_post_set entry for a newly-vouched persona via a
signed special comment — retroactive read widening without republish.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-04-24 10:37:24 -04:00
Scott Reimers
553fbd3a20 docs: Layer 2 — CDN-verified FoF comments (per-V_x keypair)
Replace single per-post priv_post with per-V_x (pub_x, priv_x). Post
header publishes pub_post_set; comments declare pub_x_index; CDN
propagation nodes verify group_sig + identity_sig against named pubkey
before forwarding. Kills bandwidth-amplification DoS from admitted-but-
malicious FoF members.

Dual-derivation wrap slot (read → CEK, sign → priv_x) with shared
structure Layer 3 inherits. Comments encrypted under CEK_comments so
Mode 2 comments are genuinely FoF-read-gated, not just FoF-sign-filtered.

Author-signed revocation diff appended to post; CDN honors per-chain
revocation. Tradeoff: pub_x_index is a per-post voucher-chain pseudonym,
re-randomized across posts. Accepted.

Layer 3 banner added noting wrap-slot structure is now superseded by
Layer 2's canonical form; full reconciliation deferred.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-04-24 08:25:40 -04:00
Scott Reimers
b8b38a6f03 docs: Layer 1 — HPKE-sealed vouch grants via bio post
Replace DM-wrapped VouchGrant with HPKE (RFC 9180) per-recipient
wrappers in the voucher's bio post. Recipient anonymity via HPKE key
privacy; readers trial-decrypt per persona. 48B per wrapper, one
ephemeral pubkey per batch. Scan gated to follows + manual gesture.
Bucket padding + per-publish shuffle for size/position opacity.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-04-24 07:38:12 -04:00
Scott Reimers
1fdf9a94cc docs: FoF-gating spec skeleton (hand-off to Opus)
Drafts the Friend-of-Friend post-gating spec with crypto specifics
marked TBD — OPUS for Opus to fill in. Six-layer implementation plan;
each layer independently shippable.

Includes README overview + six layer files:
- Layer 1: V_me vouch primitive (keys, keyring, VouchGrant wire format)
- Layer 2: Mode 2 — public post + FoF-gated comments
- Layer 3: Mode 1 — FoFClosed (encrypted body via wrap_slots + prefilter)
- Layer 4: per-post keypair rotation
- Layer 5: unlock cache + prefilter optimization (perf-critical)
- Layer 6: revocation (stub; likely deferred post-v1)

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-04-23 23:20:56 -04:00
Scott Reimers
d118daee28 Merge PR: adopt multi-contributor git workflow (chore/workflow-adoption)
Lead self-merge. Inaugural exercise of self-merge authority established
by this very PR. Adds CONTRIBUTING.md, AGENTS.md, sessions.md at the
repo root. Phase 0 prereqs (CI, branch protection, second Forgejo
account) still pending; tracked in CONTRIBUTING.md.
2026-04-23 20:08:28 -04:00
Scott Reimers
518fa43f4f Adopt multi-contributor git workflow (CONTRIBUTING.md + AGENTS.md + sessions.md)
First-pass adoption of the branch-and-PR workflow so Scott can onboard
Jr Claude contributors without blocking on the Lead. This PR is also
the inaugural test case of the workflow — branch + PR + review rather
than direct-to-master.

Three new files at the repo root:

- **CONTRIBUTING.md** — authoritative workflow policy. Based on the
  doc Opus outlined, with ItsGoin-specific amendments:
    1. Hotfix carve-out: Lead retains direct-to-master authority for
       true production-down scenarios, with mandatory retrospective PR
       within 24h.
    2. Build trigger is explicit — Scott says "ship it," no rolling
       auto-deploy.
    3. Review SLA is "natural stopping point," no hard time budget.
       Exception: Jr blocked + Scott flags urgent → Lead preempts.
    4. Re-evaluation triggers for the Lead role (5+ agents, >1d review
       latency, rewriting PRs in review, Scott's routing load).
    5. Secrets policy explicit (`.deploy-creds` is .gitignored; never
       commit credentials).
  A Phase 0 checklist at the bottom tracks which prereqs (CI, branch
  protection, Jr Forgejo account) are still pending.

- **AGENTS.md** — cross-agent session-start guide. Originally drafted
  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 (emerging cross-tool convention) with an explicit
  security banner at the top forbidding credential writes. Covers
  session start, role-specific starts (Lead vs Jr), session end,
  critical rules.

- **sessions.md** — rolling contributor coordination log. Seeded with
  an entry for this PR and the current post-v0.6.2-ship state (anchor
  PID 3475521, shipped artifacts, last merged commit 2ce668a).

No code touched. Workflow-only.

Phase 0 prereqs still open after this PR:
- Forgejo CI (`cargo check` + `cargo test` on push + PR)
- Branch protection on master (require PR + 1 review + green CI)
- Second Forgejo account + SSH key for Jr Claude(s)
2026-04-23 20:07:54 -04:00
Scott Reimers
2ce668aa58 People tab rewrite: recency sort, profile-post Discover, bio modal,
per-author feed filter, ignore primitive

The old People tab was built on network-layer presence (`is_online`,
`last_seen` from the mesh), which was lost when v0.6.1 anonymized the
network id from the posting id. Every named follow is authored under a
posting id that doesn't appear in the connection-layer tables; the
"Online" section listed nobody useful and Discover depended on the
same broken signal.

Replaced with signals derived from signed content:
- Following is sorted by most-recent-post timestamp (the real meaning
  of "activity" in a post-anonymization world).
- Discover lists named peers we've received signed profile posts from
  (via Phase 2d), filtered by follows / ignores / self.
- Click-a-name surfaces a bio modal with View Posts / Follow / Message
  / Ignore actions.
- Author-scoped feed filter (`View Posts` on any person) renders a
  "Showing posts from X" banner with a Clear button.
- Ignore is a new local-only primitive; ignored peers' posts and
  profiles are excluded everywhere and the ignored list is editable
  in Settings.

Core changes:

- New `ignored_peers(node_id, ignored_at)` table + storage helpers
  (`add_ignored_peer`, `remove_ignored_peer`, `list_ignored_peers`,
  `is_ignored_peer`). Schema created fresh; no migration since the
  table is purely additive and empty on prior installs.
- All 6 feed-query sites now also exclude `author IN ignored_peers`.
- New `Storage::last_activity_for_authors(&[NodeId])` — one batched
  query returning max post timestamp per author, excluding non-feed
  intents (Control / Profile / Announcement / GroupKeyDistribute).
- New `Storage::list_discoverable_profiles(&self_id)` — named profile
  rows where node_id is not self, not in follows, not in ignored, and
  `public_visible = 1`. Sorted by profile `updated_at` DESC.
- New `Storage::delete_setting(key)` — missing counterpart to
  set/get.
- Node wrappers: `last_activity_for_follows`, `ignore_peer`
  (also drops any follow + social route for the ignored peer),
  `unignore_peer`, `list_ignored_peers`, `list_discoverable_profiles`.
- `list_follows` Tauri command now sources `last_activity_ms` from
  the posts-driven batched query rather than the network peer record.

Tauri commands: `list_discover`, `ignore_peer`, `unignore_peer`,
`list_ignored_peers`.

Frontend:
- Following list: see-new-activity button pattern (staged data +
  explicit user click to rearrange, so the list doesn't reorder under
  a tap mid-scroll). Periodic people-tab polling stages + lights up
  the button; clicking it re-renders.
- Discover: rewrites the old peer-table-based list to a profile-post
  feed. Each card shows name + bio + profile-update age, plus Follow
  / Posts / Ignore actions.
- Bio modal: reuses the existing generic popover. Loads display name
  + bio via `resolve_display`, shows follow state, offers View Posts /
  Follow-or-Unfollow / Message / Ignore-or-Unignore.
- Author filter: banner renders at the top of the feed when active;
  clear button restores full feed. Filter state is a single `authorFilterNodeId`
  field consumed by `filterFeedPosts`.
- Settings → Ignored section lists ignored peers with unignore buttons.

124 / 124 core tests pass.
2026-04-23 12:15:51 -04:00
Scott Reimers
e74bd4e6c6 Profile-post backfill + prune disposable first-run persona on import
Two bugs the v0.6.2 Discover story was going to expose:

1) Many named personas don't have a profile post yet, so the planned
   profile-post-driven Discover listing would show them as headless.
   Existing personas predate the Phase 2d profile-post primitive, and
   imported personas arrive with a display_name but no matching post.

2) Fresh install always generates a blank disposable persona before
   the user can pick fresh-vs-import. If the user picks import, that
   blank persona lingers forever — visible in the Personas list, a
   potential default, confusing.

Fixes:

Profile-post backfill (node.rs):
- New `Node::backfill_profile_posts_for_named_personas`: scans posting
  identities, skips unnamed or already-covered ones, and emits a
  signed profile post at the persona's own `created_at` timestamp. Run
  once from `Node::open_with_bind` after migrations. Idempotent via
  the new `Storage::has_profile_post_by_author` check. Chronology is
  preserved (post timestamp matches persona creation), so a later
  genuine profile update the user authors always wins the `> old_ts`
  monotonicity check on receivers.
- `Node::create_posting_identity(name)`: if `name` is non-empty, emits
  the profile post inline so new named personas are Discover-able the
  moment they're created. Uses the new `publish_profile_post_as`
  helper, which signs with the persona's own secret (not the default
  posting secret) and propagates via `update_neighbor_manifests_as`.

First-run persona marker + targeted prune (node.rs + storage.rs + import):
- `Node::open_with_bind`'s auto-gen block now also writes
  `first_run_auto_persona_id = <hex>` into the settings kv. This marks
  the specific disposable persona from the fresh-install flow; later
  prune logic uses this id, not a "any empty persona" rule, so manual
  empty personas are never touched.
- `Node::try_prune_first_run_auto_persona`: deletes the marked id iff
  all four gates pass — still exists, no display_name, no authored
  posts, no authored reactions/comments, and it's no longer the
  current default. Any one failure → clear the marker and keep the
  persona. New storage helpers `has_any_post_by_author`,
  `has_any_engagement_by_author` back the check.
- `set_profile` clears the marker when a non-empty name lands on the
  marked persona (user claimed it).
- `storage.delete_setting(key)` — new one-line helper.
- `import_as_personas_cmd` in tauri-app calls the prune after import
  completes; the cmd's return message reports "(cleared blank starter
  persona)" when it fires.
- New `get_first_run_auto_persona_id` Tauri command so the frontend
  can filter the blank persona out of the Personas list while it
  still exists.
- Frontend `loadPersonas` filters the marker id out of
  `personasCache` before rendering.

Tests: 124 / 124 core tests pass.
2026-04-23 08:47:30 -04:00
Scott Reimers
d990da5bda Fix: imported DMs silently hidden from Messages tab
Two bugs ganging up:

1) Import ignored the intent field. `ExportedPost.intent` was always
   serialized on export but the import path hardcoded every encrypted
   post to `VisibilityIntent::Friends` (import.rs:308-311), discarding
   whatever `ep.intent` said. DMs got misfiled as Friends.

2) The Messages tab filter only surfaces posts whose `intentKind` is
   `direct` (or `unknown` with the right visibility shape). Posts with
   `intentKind = friends` skip the filter — DMs became invisible after
   an "everything" import, even though the rows were in the DB and the
   per-persona decrypt loop would have resolved them to plaintext.

Fixes:

- `parse_exported_intent(raw, vis)` in import.rs: parses the Debug-format
  intent string the export writes, handling Public / Friends / Circle /
  Direct / Control / Profile / Announcement / GroupKeyDistribute. For
  `Direct`, recovers the recipient list from `PostVisibility::Encrypted`
  since the Debug format for `Vec<NodeId>` isn't cleanly parseable.
- Heuristic fallback when the export carries no intent (pre-v0.6.1
  source DBs, where the intent column wasn't populated): Encrypted
  posts with <=3 recipients are classified as `Direct`, larger
  recipient lists stay `Friends`. DMs typically wrap to 1-2 people;
  Friends wraps to every public follow.
- `StagedImport.posts` tuple grows an `intent` slot; the store step
  uses the parsed/inferred intent instead of the hardcoded default.

One-time startup migration:
- Sweeps existing posts where `visibility_intent = "Friends"` and
  visibility is Encrypted with <=3 recipients; rewrites to Direct.
  Guarded by `mig_import_dm_fixup_v1` settings key so it runs once
  per DB. Handles already-imported corrupt state so users don't need
  to re-import.

Tests: 124 / 124 core tests pass.
2026-04-23 08:11:11 -04:00
Scott Reimers
fb0e293e2d Fix DEFAULT_ANCHOR: use post-rotation network key (ab2b72...)
The anchor rotated its network key on 2026-04-22 22:57 UTC during the
v0.6.1 upgrade (keeping the old key as its posting identity). The
DEFAULT_ANCHOR constant was never updated, so every v0.6.1 and v0.6.2
client has been pinning the old cert identity when connecting, producing
a TLS "UnknownIssuer" handshake error.

Symptom: fresh clients can't bootstrap; existing installs drop when the
anchor's old connection times out and can't re-handshake.

Verified: rebuilt CLI with the new constant successfully connects to
the anchor, completes the initial exchange, registers as a mesh peer,
and runs a pull sync.

Note: `DEFAULT_ANCHOR_POSTING_ID` in lib.rs still holds the OLD key
(17af14...) — that's correct, it's the anchor's posting identity used
to verify signed announcements, distinct from the network key used for
QUIC cert verification.
2026-04-23 02:04:55 -04:00
Scott Reimers
481e1c8435 Network-wide announcements signed by the bootstrap anchor posting id
New primitive: `VisibilityIntent::Announcement`, a public post whose
author MUST be the hardcoded bootstrap anchor posting identity
(`DEFAULT_ANCHOR_POSTING_ID`) and whose content carries an ed25519
signature by that key. Forged announcements (any other author, or
bad signature) are rejected by `control::receive_post` before storage
— they never enter the DB and never propagate via neighbor-manifest
diffs. Only the real anchor can publish announcements, and it does so
sparingly as part of the release deploy flow.

Uses release announcements to drive an in-app upgrade banner:
- Anchor publishes a signed `{category:release, version, channel,
  download_url, ...}` post during every deploy.
- Clients receive it via the normal CDN; `apply_announcement_if_applicable`
  stores the latest-per-category/channel in the settings kv, keyed
  e.g. `announcement:release:stable`.
- Welcome screen checks storage on startup; if the stored release
  version > CARGO_PKG_VERSION on the user's selected channel, a banner
  appears with a Download button that opens the system browser.
- Settings gets "Updates" section with Stable / Beta radio + Check-now
  button + current status line.

Core:
- `DEFAULT_ANCHOR_POSTING_ID: NodeId` constant (32 bytes, the anchor's
  current posting id — `17af141956ae...`).
- New `VisibilityIntent::Announcement` variant; feed filters in all 6
  `get_feed*` / `list_posts*` query sites updated to also exclude the
  new intent AND the pre-existing `GroupKeyDistribute` intent.
- `types::AnnouncementContent` + `ReleaseAnnouncement` structs.
- `crypto::{sign,verify}_announcement` — length-prefixed field digest
  with a "has release" 1-byte flag.
- New `announcement` module with `verify_announcement_post`,
  `apply_announcement_if_applicable`, `latest_release`,
  `build_announcement_post`, and a `StoredAnnouncement` envelope saved
  to settings so the UI can render without a full post scan.
- `Node::publish_announcement` refuses to run unless the default posting
  id equals the anchor constant — accidental use on client installs
  fails loud.

Wire / receive:
- `control::receive_post` verifies announcement signatures upfront
  alongside Control and Profile. Same pattern; same guarantees.

CLI one-shots (no daemon):
- `itsgoin <data_dir> --print-identity` — prints network_id +
  default_posting_id, exits.
- `itsgoin <data_dir> --announce --ann-category release
  --ann-channel stable --ann-version X --ann-title ... --ann-body ...
  --ann-url https://itsgoin.com/download.html` — builds + stores +
  propagates the signed post, exits.

deploy.sh:
- Now runs the announce one-shot inside the anchor-restart window
  (after binary swap, before start). The DB is free during that gap,
  so the one-shot can write without conflicting with the running
  daemon. The restarted daemon loads all storage on boot and serves
  the new announcement to pulling peers.

Tauri IPC:
- `check_release_announcement(channel)` → Option<ReleaseAnnouncementDto>
  — returns None when up-to-date.
- `get_update_channel` / `set_update_channel(channel)` — persists in
  settings kv key `ui_update_channel`; defaults to stable.
- `open_url_external(url)` — desktop-only (xdg-open / open / cmd start);
  refuses non-http(s) URLs. Android needs the opener plugin — TODO.

Frontend:
- Upgrade banner on the welcome screen, populated by
  `loadUpgradeBanner()`. Hidden when no newer release is known.
- Settings → Updates section with Stable/Beta radio + Check-now button
  + current status line.

Tests: announcement signature roundtrip; non-anchor author rejection;
non-announcement intent is a no-op. 124 / 124 core tests pass.
2026-04-23 01:50:12 -04:00
Scott Reimers
67d9367eec deploy.sh: note the Windows-installer handoff at script end
The deploy pipeline builds AppImage, APK, and CLI on Linux, but the
Windows installer is produced on a separate Windows host (no
cross-compile toolchain here). Print a reminder at the end of every
deploy with the exact filename the Windows team needs to upload, so
the handoff stays unambiguous.
2026-04-23 01:06:28 -04:00
Scott Reimers
738c902287 Download page: add Windows installer link stub + btn-windows style
Adds the v0.6.2 Windows installer link pointing to the expected
filename `itsgoin-0.6.2-windows-x64-setup.exe`. Link is live before
the artifact lands so the Windows build pipeline (separate host) has
a stable path to upload to — same pattern we use to coordinate the
Linux / Android builds with the website copy.

Adds `.btn-windows { background: #0078d4 }` to style.css for the
standard four-button download row: Android, Linux AppImage, Linux
CLI, Windows Installer.
2026-04-23 01:03:26 -04:00
Scott Reimers
938edadad3 Update v0.6.2 changelog date to April 23, 2026 (ship date) 2026-04-23 00:01:05 -04:00
Scott Reimers
88dfbd26f4 Fix: idx_group_keys_root migration creates index on missing column
The Phase 2f `canonical_root_post_id` column was added to both the
CREATE TABLE block (for fresh DBs) and a conditional ALTER TABLE (for
upgrading DBs). The matching CREATE INDEX, however, was inlined in the
CREATE TABLE block — which runs BEFORE the ALTER. On an upgrading DB
with the v0.6.1 schema, CREATE TABLE IF NOT EXISTS is a no-op against
the existing (old) table, so the table still lacks the column when the
index statement runs and SQLite bails with "Error code 1: SQL error or
missing database" at offset 74.

Caught on the v0.6.2 anchor deploy — the anchor died right after start
because its v0.6.1 DB couldn't apply migrations.

Fix: remove the index from the CREATE TABLE block; run an unconditional
`CREATE INDEX IF NOT EXISTS idx_group_keys_root ...` in the migration
section, after the conditional ALTER has added the column. Idempotent
in both paths — fresh DB (column from CREATE TABLE) and upgrading DB
(column from ALTER).

121 / 121 core tests pass.
2026-04-23 00:00:06 -04:00