fix: Update author to John O'Hare, fix mermaid diagram rendering

- Update Cargo.toml author from Robert E. Lee to John O'Hare
- Fix stateDiagram-v2 labels: remove <br/> tags that don't render
- Fix ER diagram: remove non-existent ended_at/resolved_at columns
- Fix NDJSON label escaping in socket protocol diagram
- Update SECURITY.md flock example to match actual Flock::lock API

Author: John O'Hare

Cargo.toml

@@ -4,7 +4,7 @@ version = "0.2.1"
 edition = "2021"
 description = "Bidirectional Telegram integration for Claude Code CLI"
 license = "MIT"
-authors = ["Robert E. Lee <robert@agidreams.us>"]
+authors = ["John O'Hare <github@thedreamlab.uk>"]
 
 [[bin]]
 name = "ctm"

docs/ARCHITECTURE.md

@@ -185,21 +185,21 @@ sequenceDiagram
 
 ```mermaid
 stateDiagram-v2
-    [*] --> Active: First hook event<br/>(auto-created)
+    [*] --> Active: First hook event
 
-    Active --> Active: Hook events<br/>update activity
+    Active --> Active: Hook events update activity
 
-    Active --> Ended: Stop event<br/>(turn complete)
+    Active --> Ended: Stop event
 
-    Ended --> Active: New hook event<br/>(reactivate)
+    Ended --> Active: New hook event (reactivate)
 
     Ended --> TopicClosed: auto_delete=false
     Ended --> PendingDeletion: auto_delete=true
 
     PendingDeletion --> TopicDeleted: delay expires
-    PendingDeletion --> Active: New event<br/>(cancel deletion)
+    PendingDeletion --> Active: New event (cancel deletion)
 
-    Active --> StaleCleanup: No tmux: 1h idle<br/>With tmux: 24h + pane dead
+    Active --> StaleCleanup: Idle timeout exceeded
 
     StaleCleanup --> TopicDeleted: auto_delete=true
     StaleCleanup --> TopicClosed: auto_delete=false
@@ -228,7 +228,7 @@ graph LR
     end
 
     C1 --> S1
-    C2 -->|"NDJSON\n"| S2
+    C2 -->|NDJSON lines| S2
     S2 --> S3
     S3 --> S4
 ```
@@ -378,7 +378,6 @@ erDiagram
         TEXT tmux_socket
         TEXT started_at
         TEXT last_activity
-        TEXT ended_at
     }
 
     pending_approvals {
@@ -388,7 +387,6 @@ erDiagram
         TEXT status
         TEXT created_at
         TEXT expires_at
-        TEXT resolved_at
     }
 
     sessions ||--o{ pending_approvals : "has"

docs/SECURITY.md

@@ -169,9 +169,11 @@ fs.writeFileSync(pidFile, process.pid);  // TOCTOU gap!
 ```rust
 // Atomic: flock(2) is kernel-level, no race possible
 let file = fs::OpenOptions::new().write(true).create(true).open(&pid_path)?;
-match flock(file.as_raw_fd(), FlockArg::LockExclusiveNonblock) {
-    Ok(()) => { /* We hold the lock */ }
-    Err(Errno::EWOULDBLOCK) => { /* Another process holds it */ }
+match Flock::lock(file, FlockArg::LockExclusiveNonblock) {
+    Ok(locked_file) => { /* We hold the lock */ }
+    Err((_, errno)) if errno == Errno::EWOULDBLOCK => {
+        /* Another process holds it */
+    }
 }
 ```