chore(dotfiles): sync omp + pi agent configs to chezmoi

- omp: re-add config.yml as private_config.yml (matches live fallback
  chains; minimax removed, slow -> deepseek/deepseek-v4-pro:high)
- omp: re-encrypt models.yml; llama-swap.miche static list synced to
  live /v1/models (21 models), stale entries dropped
- pi: fix broken settings.json tracking — dir_dot_pi/ mapped to a
  literal ~/dir_dot_pi, real ~/.pi/agent/settings.json was never
  managed. Track it via dot_pi/agent/settings.json.tmpl

dot_pi/agent/settings.json.tmpl

@@ -0,0 +1,73 @@
+{
+  "defaultProvider": "zai",
+  "defaultModel": "glm-5.2",
+  "defaultThinkingLevel": "high",
+  "quietStartup": true,
+  "lastChangelogVersion": "0.83.0",
+  "theme": "gruvbox-dark",
+  "powerline": true,
+  "footer": false,
+  "header": true,
+  "header-info": true,
+  "packages": [
+    "npm:pi-powerline",
+    "npm:pi-bar",
+    "npm:@juanibiapina/pi-extension-settings",
+    "npm:pi-mcp-adapter",
+    "https://github.com/firecrawl/pi-firecrawl",
+    "npm:pi-subagents",
+    "npm:pi-intercom",
+    "npm:gentle-engram",
+    "npm:pi-prompt-template-model",
+    "npm:pi-ask-user",
+    "npm:@devkade/pi-plan",
+    "npm:pi-simplify",
+    "npm:pi-add-dir",
+    "npm:@plannotator/pi-extension",
+    "npm:pi-slopchop",
+    "npm:@tmustier/pi-usage-extension",
+    "npm:@tmustier/pi-raw-paste",
+    "npm:pi-btw",
+    "npm:pi-interactive-shell",
+    "git:github.com/davebcn87/pi-autoresearch",
+    "npm:@tmustier/pi-ralph-wiggum",
+    "npm:@victor-software-house/pi-curated-themes",
+    "npm:pi-terminal-theme",
+    "git:github.com/DietrichGebert/ponytail",
+    "git:github.com/jonjonrankin/pi-caveman",
+    "npm:@danielmeneses/pi-llama-swap",
+    "npm:pi-llama-cpp-stats"
+  ],
+  "enableInstallTelemetry": false,
+  "subagents": {
+    "agentOverrides": {
+      "worker": {
+        "model": ""
+      },
+      "planner": {
+        "model": ""
+      },
+      "oracle": {
+        "model": "qwen3.6-27b-mtp"
+      },
+      "reviewer": {
+        "model": ""
+      },
+      "scout": {
+        "model": ""
+      },
+      "researcher": {
+        "model": ""
+      },
+      "context-builder": {
+        "model": ""
+      }
+    },
+    "watchdog": {
+      "main": {
+        "model": "miche.llama/qwen36-35b-genesis-v4"
+      }
+    }
+  },
+  "hideThinkingBlock": true
+}