Normalize agent instructions and workplan frontmatter (STATE-WP-0067)

- Align agent files with on-disk workplan prefixes (infer from workplan ids)
- Set workplan domain to registered domain_slug; add topic_slug where applicable
- Repair frontmatter delimiter formatting; migrate legacy task status literals
- Regenerate AGENTS.md, CLAUDE.md, and .claude/rules from State Hub templates

workplans/EMAIL-WP-0001-repo-onboarding.md

@@ -2,7 +2,7 @@
 id: EMAIL-WP-0001
 type: workplan
 title: "Repository Onboarding and Implementation Foundation"
-domain: custodian
+domain: infotech
 repo: email-connect
 status: finished
 owner: codex

workplans/EMAIL-WP-0002-mvp-mailbox-evidence-scanner.md

@@ -2,7 +2,7 @@
 id: EMAIL-WP-0002
 type: workplan
 title: "MVP Mailbox Evidence Scanner"
-domain: custodian
+domain: infotech
 repo: email-connect
 status: finished
 owner: codex
@@ -653,7 +653,8 @@ This allows rescanning old messages after parser improvements.
 Initial mappings:
 
 | Parsed class              | Normalized event                            | Assessment                      |
-| ------------------------- | ------------------------------------------- | ------------------------------- |
+| ------------------------- | ------------------------------------
+------- | ------------------------------- |
 | `hard_bounce`             | `notification.endpoint.rejected_permanent`  | `fail.hard_bounce`              |
 | `soft_bounce`             | `notification.endpoint.rejected_temporary`  | `undef.deferred`                |
 | `delayed_delivery_notice` | `notification.endpoint.deferred`            | `undef.deferred`                |
@@ -672,7 +673,8 @@ The scanner should update basic endpoint quality.
 Examples:
 
 | Evidence      | Endpoint quality update                                    |
-| ------------- | ---------------------------------------------------------- |
+| ------------- | ------------------------------------
+---------------------- |
 | Hard bounce   | `reachability = unreachable`, `last_failure_at = now`      |
 | Soft bounce   | `reachability = degraded`, `last_failure_at = now`         |
 | Complaint     | `suppression_state = suppressed`                           |

workplans/EMAIL-WP-0003-expected-recipient-reporting-and-mailbox-tutorial.md

@@ -2,7 +2,7 @@
 id: EMAIL-WP-0003
 type: workplan
 title: "Expected Recipient Reporting and Mailbox Tutorial"
-domain: custodian
+domain: infotech
 repo: email-connect
 status: finished
 owner: codex