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3 Commits

Author SHA1 Message Date
1f56f34113 #296: remove the unsubscribe-token dual-verify window early
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Operator decision at the ADR 0020 acceptance: verification is
subkey-only now instead of waiting for the stated 2026-11-01 expiry.
Links in digest mails sent before the #188 key separation stop working;
recipients use the in-app notification settings. A regression test pins
that the legacy derivation (root key + purpose prefix) can never verify
again; security.md records the removal.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01AUtYMxwTCMHG9mVHnwbFg8
2026-07-31 23:03:03 +02:00
3d1f4fda53 #188: purpose-bound token keys via HKDF, jose replaces the homegrown JWT
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COLLAB_TOKEN_SECRET becomes a root key: every purpose derives its own
HKDF-SHA-256 subkey (deriveTokenKey), and no code path signs with the
root key directly. Collaboration tokens are signed and verified by jose
with HS256 as an explicit allowlist; the sign/verify API turns async at
its three call sites. Unsubscribe tokens move from a purpose-prefix
string to the structural subkey, with a documented dual-verify window
(legacy derivation accepted until 2026-11-01, covering the 90-day TTL
of links in already-sent mail).

The cross-runtime property that justified the homegrown implementation
is now proven by a test: the built CJS and ESM dist artefacts round-trip
tokens in both directions in child processes (jose v6 reaches CJS via
Node's require(esm), pinned Node 22 images). Negative tests cover
cross-purpose subkeys, root-key-signed tokens, alg:none and RS256.

Refs #188 (ADR 0020)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0168Ph5uBmHm8X28CSVpbpnJ
2026-07-30 06:41:11 +02:00
9674c0bae2 Batch notifications into localized e-mail digests with unsubscribe (#95)
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New per-user digestFrequency (hourly default | daily | off) on the
profile and in the settings UI. A scheduler job (15 min cadence) mails a
user once their oldest unread, unmailed notification exceeds the cadence
window: one localized mail per batch, grouped per pond then per page
with actor names and change/comment counts, enqueued through the mail
outbox. Sending marks the batch mailed — never read — and re-checks page
read permission per entry at send time; entries the user can no longer
read are dropped from the mail but still marked handled, so revoked
content cannot queue forever. Every mail carries a signed, single-purpose
unsubscribe link: it only flips the setting to off, renders a session-free
confirmation page, and sets no cookie.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EwZ4jR4KFAPvpjWevfUGX1
2026-07-11 23:37:26 +02:00