refactor: update Pi agent configuration and devShell

- Switch model provider from zai/glm-5.1 to minimax/MiniMax-M2.7
- Add coding rules for Nix language and standard concerns
- Add linting tools (statix, deadnix) to devShell
- Simplify devShell configuration
- Update AGENTS.md project rules

flake.lock

@@ -39,6 +39,22 @@
         "url": "https://code.m3ta.dev/m3tam3re/AGENTS"
       }
     },
+    "agents_2": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1776092721,
+        "narHash": "sha256-avV4Snqp0K57I9s8D61+GHlg9DYZFSIvjaS4d4RYpG8=",
+        "ref": "refs/heads/master",
+        "rev": "0ad41acb03eee0e22cba611b2171a3d3ee30cb10",
+        "revCount": 72,
+        "type": "git",
+        "url": "https://code.m3ta.dev/m3tam3re/AGENTS"
+      },
+      "original": {
+        "type": "git",
+        "url": "https://code.m3ta.dev/m3tam3re/AGENTS"
+      }
+    },
     "base16-schemes": {
       "flake": false,
       "locked": {
@@ -412,11 +428,11 @@
         "treefmt-nix": "treefmt-nix"
       },
       "locked": {
-        "lastModified": 1776784995,
-        "narHash": "sha256-ikxb8cZGWHuZMs3xS471GVrpGA0xW1YFcIVOPTVkhBo=",
+        "lastModified": 1776870400,
+        "narHash": "sha256-PleMddBk0Vp2iVsNVgqmL00u1xX1cFx8FVYOEOur/1Q=",
         "owner": "numtide",
         "repo": "llm-agents.nix",
-        "rev": "e3d40d2cd66a4f8052e4224ec027c6896a455847",
+        "rev": "bd0e8933483e6e1b33bd83c5e844926b33db0f75",
         "type": "github"
       },
       "original": {
@@ -427,6 +443,7 @@
     },
     "m3ta-nixpkgs": {
       "inputs": {
+        "agents": "agents_2",
         "basecamp": "basecamp",
         "nixpkgs": "nixpkgs_6",
         "nixpkgs-master": "nixpkgs-master",
@@ -434,8 +451,8 @@
         "openspec": "openspec"
       },
       "locked": {
-        "lastModified": 1776787894,
-        "narHash": "sha256-aDi7tWtiBdUBLhH4ULHZpcUTq3/w/Rad6dA/uLHu+7Q=",
+        "lastModified": 1776872602,
+        "narHash": "sha256-v1rGBLuanysy7z0BBgId1DYknIovLF5VI6xbT4abjTI=",
         "path": "/home/m3tam3re/p/NIX/nixpkgs",
         "type": "path"
       },