docs(skills): owner loop-doctrine + collaborator delivery discipline, remediated (#44)

ms-communications: integrated as-authored - owner preamble restructure +
collaborator delivery-discipline hunks from the #43 calibration (own
session output is not a send path; the tool performs the preamble flip;
receiving rule 3 requires actually running agent-send.sh).

ms-conductor: collaborator redraft integrated (canon-aligned tracking
surfaces, one-action cadence, fail-closed core) with one conductor
remediation - step 3 now distinguishes refusal (fail closed, never
bypass) from runner outage (direct dispatch to a qualified live seat via
ms-communications permitted, recorded loudly as degraded: no sandbox, no
run record; suites still gate integration). Preserves the owner's
outage-dispatch intent inside invariant 6.

docs/TOOLS.md: release.sh ensure row added (M16 subcommand existed in
code but not in the doc - flagged by the collaborator, verified in
release.sh usage).

Authorship: owner (ms-conductor doctrine, preamble restructure) +
ms-test collaborator (delivery hunks, redraft); remediation + integration
by conductor (dragon-lin:darkwing). Suites 24/74/14/17 + verify green;
unslop clean.

skills/ms-communications/SKILL.md

@@ -16,24 +16,35 @@ SESSIONS.md, never in a pane that scrolls away.
   submits reliably (bracketed paste, Enter flush, draft detection), and ships
   itself over ssh for remote targets. Never raw `tmux send-keys`; that is how
   messages die as unsubmitted drafts.
-- Non-Fleet seats use the default docket.
-- Fleet seats use the named socket: `-L mosaic-fleet` (or `MOSAIC_TMUX_SOCKET`).
-  Fleet traffic stays off the user's default tmux server.
-- Address durable fleet seats exactly: `=coder0`, not a prefix that might match
-  two sessions.
-- Tool spec and internals: `tools/tmux/README.md`.
+- Your own session output is not a send path either. A reply composed as
+  assistant prose, however well formatted, delivers nothing to the
+  recipient's pane; a hand-written preamble in prose is decoration, not
+  delivery. A reply exists only once `agent-send.sh` has run, and its exit
+  code is the delivery receipt. No rc, no send.
 
-## Preamble (required)
+### Preamble
+Preamble is prepended to the message when using the `agent-send.sh` script.
+Check the script for usage instructions.
 
 ```
 [<src_host>:<src_session> -> <dst_host>:<dst_session>] <message>
 [<src> -> <dst> class=<CLASS>] <message>     # with triage class
 ```
 
-`host` is `hostname -s` of the sender's machine; `session` is the tmux session
-name. `agent-send.sh` writes the preamble for you. Two rules carry the protocol:
+- Non-Fleet seats use the default docket.
+- Fleet seats use the named socket: `-L mosaic-fleet` (or `MOSAIC_TMUX_SOCKET`).
+  Fleet traffic stays off the user's default tmux server.
+- Address durable fleet seats exactly: `=coder0`, not a prefix that might match
+  two sessions.
+- Tool spec and internals: `tools/tmux/README.md`
+
+- `host` is `hostname -s` of the sender's machine; `session` is the tmux session
+  name. `agent-send.sh` writes the preamble for you. Two rules carry the protocol:
 
 1. Replying? Flip it: `[<dst> -> <src>] ...`. Answer under your own lane.
+   The tool performs the flip: aim your send at the original sender's session
+   (`agent-send.sh -s <src_session> -C <class>`) and it writes the flipped
+   preamble for you. Never write the bracket line yourself.
 2. A preamble-less cross-agent message is malformed. If you receive one, ask
    the sender to resend before acting on it.
 
@@ -66,7 +77,10 @@ Class honestly. Never downgrade a question you want answered to `terminal-log`.
 
 1. Read the preamble first. Confirm you are the `dst`. Note the `src`.
 2. Triage by class (table above). `actionable` or absent: act now, or reply why not.
-3. Reply with the preamble flipped. Cite the run id or issue you acted on.
+3. Reply by sending: invoke `agent-send.sh` aimed at the sender's session; the
+   tool writes the flipped preamble. Cite the run id or issue you acted on.
+   Formatting the reply into your own output without running the tool leaves
+   the sender with nothing; that is a dropped reply, not a late one.
 
 ## Delivery mechanics