Fix stale CLI changelog version and remove redundant CWD injector

- CLI CHANGELOG: "Ships with CodeForge v2.1.0" → "v2.1.1" to match
  the actual container release version
- Remove agent-system's inject-cwd.py and its SubagentStart hook —
  workspace-scope-guard already handles SubagentStart with superior
  scope-resolved CWD (worktree-aware, git-root-aware, session-persisted)

Author: AnExiledDev

cli/CHANGELOG.md

@@ -2,7 +2,7 @@
 
 ## v0.1.0 — 2026-03-14 (Experimental)
 
-Initial release. Ships with CodeForge v2.1.0.
+Initial release. Ships with CodeForge v2.1.1.
 
 ### Command Groups
 

container/.devcontainer/plugins/devs-marketplace/plugins/agent-system/hooks/hooks.json

@@ -13,18 +13,6 @@
 				]
 			}
 		],
-		"SubagentStart": [
-			{
-				"matcher": "",
-				"hooks": [
-					{
-						"type": "command",
-						"command": "python3 ${CLAUDE_PLUGIN_ROOT}/scripts/inject-cwd.py",
-						"timeout": 3
-					}
-				]
-			}
-		],
 		"TeammateIdle": [
 			{
 				"hooks": [