clean up edits and chapter 15 done, 16 in draft

characters/ledger.md

@@ -66,7 +66,7 @@
 Ledger served in the Pathfinders — **different unit than Devod, different era or region.** He knows *of* "the Wolf" by reputation but they never served together. Devod doesn't know Ledger personally.
 
 ### What the Pathfinder Past Explains
-- **The intelligence network** is old Pathfinder comrades repurposed into an information web — this is how a "desk analyst" has contacts in the warrens and across Drenwick's underworld
+- **The intelligence network** is old Pathfinder comrades repurposed into an information web — internally known as **The Cairns** (named after the stone trail markers Pathfinders built in hostile territory). This is how a "desk analyst" has contacts in the warrens and across Drenwick's underworld. Ledger used The Cairns to relay guild-level intel (including Phelan's alias "the Locksmith") to Brennan Toor when Devod was attacked — this is the Ch 15 anomaly Phelan notices but can't resolve
 - **Combat readiness** (throwing knives, threat assessment) is Pathfinder training, not surprising bureaucrat capability
 - **Phelan's "most dangerous person in the room" read was accurate** — the bureaucrat mask IS the disguise
 - **The Carter link** (anonymous client management in Book 1) fits Pathfinder asset-running tradecraft