docs: bridge and chat records: keep the contracts, merge Hermes' Relay

AGENTS.md

@@ -17,7 +17,7 @@ platform concept.
 - Contracts: `docs/api.md` (wire), `docs/computers.md` (image, durability),
   `docs/bridge.md` (bridge), `docs/chat-records.md` (chat records),
   `docs/secrets.md` (secret custody), `docs/ledger.md` (usage),
-  `docs/billing.md` (orgs and Stripe), `docs/hermes-relay.md` (runtime).
+  `docs/billing.md` (orgs and Stripe).
 - `docs/published-fragments.md`: primitives that must stay expressible.
 - `docs/technical-debt-ledger.md`: the only place shortcuts may live;
   include the condition for removing each one.

images/bridge/src/engine.rs

@@ -1353,10 +1353,10 @@ impl Engine {
     /// The lane is done with one of a turn's owed records; a turn that owes
     /// none is let go. Done means answered (appended, a replay, or refused:
     /// a 409 is another life's end of the turn, a 403/404 a chat it may no
-    /// longer post in) or given up after the lane's tries (docs/bridge.md:
-    /// `POST_TRIES_MAX`, with jitter, on a transport error, 429 or 5xx), so
-    /// a record that keeps failing holds its turn for one life's tries at
-    /// most, then goes.
+    /// longer post in) or given up after the lane's tries
+    /// (`limits::POST_TRIES_MAX`, with jitter, on a transport error, 429 or
+    /// 5xx), so a record that keeps failing holds its turn for one life's
+    /// tries at most, then goes.
     fn posted(&mut self, id: &str, post: &str, kept: bool) {
         let Some(t) = self.state.turns.get_mut(id) else {
             crate::ev!("owed.stale", { "turn": id, "id": post, "why": "no turn held by that id" });

images/bridge/src/main.rs

@@ -8,7 +8,7 @@
 //! fragment-bridge version
 //! ```
 //!
-//! Its settings are environment variables (docs/bridge.md lists them);
+//! Its settings are environment variables (docs/bridge.md, "Settings");
 //! secrets are files named by path, never values.
 
 use std::net::SocketAddr;

images/bridge/src/runtime/mod.rs

@@ -2,8 +2,8 @@
 //! core speaks only these commands and events; each runtime translates them
 //! into its own protocol. Two ship here:
 //!
-//! - `relay`: Hermes' Relay (docs/hermes-relay.md). Hermes dials the
-//!   bridge, which is its connector.
+//! - `relay`: Hermes' Relay (docs/bridge.md, "Hermes' Relay"). Hermes
+//!   dials the bridge, which is its connector.
 //! - `script`: a deterministic scripted agent (the stub image), so the
 //!   platform's lanes run without any agent runtime at all.
 //!

images/bridge/src/runtime/relay/fetch.rs

@@ -3,7 +3,7 @@
 //! hands back `https://….fal.media/…`, and Hermes sends a reply's image
 //! links so). Its connector contract takes a `source_url` that is a local
 //! upload or "an already-public URL (passed through)": the bridge fetches
-//! it, so it is the chat's blob as an uploaded file is (docs/bridge.md).
+//! it, so it is the chat's blob as an uploaded file is.
 //!
 //! Only what a page may show, from where the public may serve it: `https`;
 //! a host whose every address is public (never this computer's own, its

images/bridge/src/runtime/relay/wire.rs

@@ -1,6 +1,7 @@
 //! Hermes' Relay wire, as Hermes v0.21.5 (tag `v2026.9.24`, contract
-//! version 1) speaks it, read from its `gateway/relay/` (docs/hermes-relay.md;
-//! its code wins over its contract document). Pure: frames in, frames out.
+//! version 1) speaks it, read from its `gateway/relay/` (docs/bridge.md,
+//! "Hermes' Relay"; its code wins over its contract document). Pure:
+//! frames in, frames out.
 //!
 //! Frames are JSON objects, one per line, each ending with `\n`, each under
 //! `limits::FRAME_MAX_BYTES`. Hermes dials; the bridge is its connector.
@@ -804,8 +805,8 @@ mod tests {
         assert_eq!(image_links(&many).len(), crate::limits::ATTACHMENTS_MAX);
     }
 
-    /// The gateway's own test vector (docs/hermes-relay.md): its token is
-    /// ours, and ours is checked as the gateway mints it.
+    /// The gateway's own test vector (docs/bridge.md, "Hermes' Relay"): its
+    /// token is ours, and ours is checked as the gateway mints it.
     #[test]
     fn a_token_is_the_gateways() {
         let t = token("gw-test", "s3cr3t", 1_790_000_000);