Wrap T3 Code apps with optional agent CLI paths

- Split base desktop/server derivations from wrapper layers
- Add optional PATH injection for codex, claudeCode, and opencode
- Update flake inputs and lock entries for nixpkgs/llm-agents

packages/common.nix

@@ -60,25 +60,25 @@ in {
       '';
 
       buildPhase = ''
-        runHook preBuild
+                runHook preBuild
 
-        export HOME="$TMPDIR"
-        export BUN_INSTALL_CACHE_DIR="$(mktemp -d)"
-        ${extraEnv}
+                export HOME="$TMPDIR"
+                export BUN_INSTALL_CACHE_DIR="$(mktemp -d)"
+                ${extraEnv}
 
-        bun install \
-          --frozen-lockfile \
-          --ignore-scripts \
-          --backend=copyfile \
-          --linker=hoisted \
-          --no-progress \
-${renderBunInstallFlags installFlags}
-${renderBunFilters filters}
+                bun install \
+                  --frozen-lockfile \
+                  --ignore-scripts \
+                  --backend=copyfile \
+                  --linker=hoisted \
+                  --no-progress \
+        ${renderBunInstallFlags installFlags}
+        ${renderBunFilters filters}
 
-        bun --bun ${./scripts/canonicalize-node-modules.ts}
-        bun --bun ${./scripts/normalize-bun-binaries.ts}
+                bun --bun ${./scripts/canonicalize-node-modules.ts}
+                bun --bun ${./scripts/normalize-bun-binaries.ts}
 
-        runHook postBuild
+                runHook postBuild
       '';
 
       installPhase = ''
@@ -109,7 +109,11 @@ ${renderBunFilters filters}
     mkdir -p ./node_modules
     cp -R ${nodeModules}/. ./node_modules/
     chmod -R u+rwX node_modules
-    if [ ${if chmodBins then "true" else "false"} = true ] && [ -d node_modules/.bin ]; then
+    if [ ${
+      if chmodBins
+      then "true"
+      else "false"
+    } = true ] && [ -d node_modules/.bin ]; then
       chmod -R u+x node_modules/.bin
     fi
     patchShebangs node_modules