chore: remove half-baked deploy infrastructure — will redesign with Aspire SDK

Removed:
- /deploy endpoint in MCP server (wrong approach)
- DeployVerifier + tests (only needed for endpoint)
- EmojiAgent files (IAW-created, will be recreated via proper deploy)
- Deploy plans (superseded by Aspire SDK approach)

Cleaned:
- AspireAgent.DeployAsync → TODO stub (will use Aspire WithCommand)
- Removed IHttpClientFactory dependency from AspireAgent
- Removed Microsoft.Extensions.Http package from Agents.csproj
- MCP Program.cs cleaned of deploy endpoint registration
- SelfImprove prompt simplified

The self-improving deploy will be redesigned using:
- Aspire SDK WithCommand("deploy") in AppHost
- ResourceCommandService for stop→build→start
- WithExplicitStart() for shadow test instances

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: LeftTwixWand

.claude/settings.local.json

@@ -120,7 +120,12 @@
       "Read(//e/IAW/$dir/**)",
       "Bash(C:/Users/vhorb/AppData/Local/Temp/iaw-test/Program.cs:*)",
       "Read(//c/Users/vhorb/AppData/Local/Temp/iaw-test/**)",
-      "Bash(mcp__aspire__list_resources)"
+      "Bash(mcp__aspire__list_resources)",
+      "Bash(rm -f src/IAW.MCP/Deploy/DeployEndpoint.cs)",
+      "Bash(rmdir src/IAW.MCP/Deploy)",
+      "Bash(rm -f src/Core/Deployment/DeployVerifier.cs)",
+      "Bash(rmdir src/Core/Deployment)",
+      "Bash(rm -f src/Agents/Fun/IEmoji.cs src/Agents/Fun/EmojiAgent.cs)"
     ]
   },
   "enabledMcpjsonServers": [