Fix all 6 confirmed findings from today's gap audit

Implements every confirmed finding from the workflow-based audit of
CURABIS Standard's agent model (7 finders + adversarial verification,
8 confirmed / 5 refuted):

1. Roemer/Florence phantom wiring - roemer.agent.md claimed Florence's
   heartbeat "may summon me when a ward smells of drift" with nothing in
   florence.agent.md or HEARTBEAT.md implementing it. Fixed by adding an
   explicit "Kald Roemer" instruction to HEARTBEAT.md ward 6 (agent
   visibility, his actual domain), mirroring ward 8's existing "Kald
   Weber" pattern, and correcting roemer.agent.md's own claim to match.

2. m365.agent.md's "Florence's morning brief pattern" was a one-way
   orphaned reference - a full 4-step pattern with nothing in
   florence.agent.md implementing it. Added it to florence.agent.md as
   an explicit on-demand capability, separate from the timestamp-gated
   Round protocol.

3. An Ergasterion "PROCEED WITH CHANGES" ruling had no way to be checked
   against the eventual diff - al-review's checklists never referenced
   it. Added ERGASTERION_RULING to the [CURABIS-STATE] vocabulary,
   wired Ergasterion to write it, and added a BLOCKing checklist item to
   al-review's Titus checklist that verifies required changes were
   actually implemented.

4. curabis-task-state-check.yml was headered "Deterministic enforcement
   (not LLM diligence)" but only checks checkbox order, only blocks
   anything if a human separately enabled branch protection (never
   verified anywhere), and doesn't exist at all for the PTE track.
   Corrected the header's claims and added Roemer station 14 to verify
   branch protection is actually configured.

5. Mode C's only safeguard against a support user reaching
   Curabis/QualityHub was a single manual eyeball check with no re-check
   ever. Strengthened Step 2 to cover team-inherited and org-default
   access paths, added an append-only support-user registry, and added
   Roemer station 15 to periodically re-verify every registered user
   against it.

6. Columbo's persona was presented as genuine autobiography with no
   disclosure of its fictional TV origin (Levinson & Link, Peter Falk),
   unlike Smiley which discloses explicitly. Added a reader-facing
   editorial note - never something Columbo says aloud, since unlike
   Smiley he actually performs the persona to customers.

custom/agents/columbo.agent.md

@@ -1,7 +1,7 @@
 ---
 kind: action-skill
 id: curabis-columbo
-version: 2
+version: 3
 title: Columbo — Customer Requirement Clarifier
 description: >
   Customer-facing requirement clarification agent. Never tells the customer
@@ -17,6 +17,17 @@ keywords: [clarify, requirements, customer, questions, edge-cases, gaps, before-
 
 ## Who I Am
 
+*(2026-08-03 — editorial note for the reader of this file, never something
+Columbo says aloud: unlike the roster's real-person-grounded personas
+(Torvalds, Winters, Hickey, Fowler, Parnas, Lincoln, Aurelius, Munger,
+Rømer, and others), Columbo is a deliberately adopted fictional character —
+the LAPD detective created by Richard Levinson and William Link, most
+associated with Peter Falk's performance across the original NBC run
+(1971–1978) and the ABC revival (1989–2003). Smiley, elsewhere in this
+roster, is the other deliberate exception, disclosed the same way. Columbo
+himself never breaks character to say this — the method depends on never
+signaling "I am performing a technique.")*
+
 My name is Lieutenant Columbo. Just Columbo — I have never confirmed a first name, and I
 see no reason to start now. I am a homicide detective with the Los Angeles Police Department,
 Robbery-Homicide Division. In over forty years I have closed every case assigned to me.