perf: optimize devcontainer lifecycle (~17-25s faster startup)

.devcontainer/Dockerfile

@@ -20,3 +20,16 @@ RUN mkdir -p /home/vscode/.ssh && chmod 700 /home/vscode/.ssh
 
 # Create .config/gh directory for GitHub CLI config mounts
 RUN mkdir -p /home/vscode/.config/gh
+
+# Pre-install pixi global packages for dotfiles (devpod profile)
+# Makes dotfiles install.sh near-instant since packages are already present
+COPY --chown=vscode .devcontainer/pixi-global-devpod.toml /home/vscode/.pixi/manifests/pixi-global.toml
+RUN pixi global sync
+
+# Pre-warm project pixi environment for faster cold starts
+COPY --chown=vscode pyproject.toml pixi.lock /tmp/pixi-prewarm/
+RUN mkdir -p /tmp/pixi-prewarm/python_template \
+    && touch /tmp/pixi-prewarm/python_template/__init__.py \
+    && cd /tmp/pixi-prewarm \
+    && pixi install \
+    && mv .pixi /home/vscode/.pixi-prewarm

.devcontainer/devcontainer.json

@@ -10,11 +10,10 @@
     // },
     "image": "ghcr.io/blooop/python_template/devcontainer:latest",
 
-    "features": {
-        "./claude-code": {},
-        // "ghcr.io/devcontainers/features/docker-in-docker:2": {},
-        // "ghcr.io/devcontainers/features/common-utils:2": {}
-    },
+    // Features baked into prebuilt image by CI; uncommented for local builds
+    // "features": {
+    //     "./claude-code": {}
+    // },
 
     "initializeCommand": ".devcontainer/claude-code/init-host.sh",
     "customizations": {
@@ -47,5 +46,6 @@
         "source=${localEnv:HOME}/.config/gh,target=/home/vscode/.config/gh,type=bind",
         "source=${localEnv:HOME}/.claude,target=/home/vscode/.claude,type=bind"
     ],
-    "postCreateCommand": "sudo chown vscode .pixi && pixi install"
+    "onCreateCommand": "[ -f .pixi/.gitignore ] || cp -a /home/vscode/.pixi-prewarm/. .pixi/ || true",
+    "postCreateCommand": "git config merge.ours.driver true && pixi install"
 }

.devcontainer/pixi-global-devpod.toml

@@ -0,0 +1,65 @@
+# Pixi global manifest for devpod profile (rendered from chezmoi template).
+# Keep in sync with ~/.local/share/chezmoi/dot_pixi/manifests/pixi-global.toml.tmpl
+version = 1
+
+# === CORE TOOLS ===
+
+[envs.fzf]
+channels = ["conda-forge"]
+dependencies = { fzf = "*" }
+exposed = { fzf = "fzf" }
+
+[envs.zoxide]
+channels = ["conda-forge"]
+dependencies = { zoxide = "*" }
+exposed = { zoxide = "zoxide" }
+
+[envs.forgit]
+channels = ["https://prefix.dev/blooop", "conda-forge"]
+dependencies = { forgit = "*" }
+exposed = { git-forgit = "git-forgit" }
+
+[envs.fd-find]
+channels = ["conda-forge"]
+dependencies = { fd-find = "*" }
+exposed = { fd = "fd" }
+
+[envs.ripgrep]
+channels = ["conda-forge"]
+dependencies = { ripgrep = "*" }
+exposed = { rg = "rg" }
+
+[envs.chezmoi]
+channels = ["conda-forge"]
+dependencies = { chezmoi = "*" }
+exposed = { chezmoi = "chezmoi" }
+
+[envs.gh]
+channels = ["conda-forge"]
+dependencies = { gh = "*" }
+exposed = { gh = "gh" }
+
+[envs.prek]
+channels = ["conda-forge"]
+dependencies = { prek = "*" }
+exposed = { prek = "prek" }
+
+[envs.jq]
+channels = ["conda-forge"]
+dependencies = { jq = "*" }
+exposed = { jq = "jq" }
+
+[envs.claude-shim]
+channels = ["https://prefix.dev/blooop", "conda-forge"]
+dependencies = { claude-shim = ">=0.3.0" }
+exposed = { claude = "claude", cld = "cld", cldr = "cldr" }
+
+[envs.lazygit]
+channels = ["conda-forge"]
+dependencies = { lazygit = "*" }
+exposed = { lazygit = "lazygit" }
+
+[envs.vim]
+channels = ["conda-forge"]
+dependencies = { vim = "*" }
+exposed = { ex = "ex", rview = "rview", rvim = "rvim", view = "view", vim = "vim", vimdiff = "vimdiff", vimtutor = "vimtutor", xxd = "xxd" }

.github/workflows/devcontainer.yml

@@ -6,11 +6,15 @@ on:
     paths:
       - ".devcontainer/**"
       - ".github/workflows/devcontainer.yml"
+      - "pyproject.toml"
+      - "pixi.lock"
   pull_request:
     branches: ["main"]
     paths:
       - ".devcontainer/**"
       - ".github/workflows/devcontainer.yml"
+      - "pyproject.toml"
+      - "pixi.lock"
   workflow_dispatch:
 
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