task: complete t-1o2bkufixnc (Merge)

Amp-Thread-ID:
https://ampcode.com/threads/T-ca3b086b-5a85-422a-b13d-256784c04221
Co-authored-by: Amp <amp@ampcode.com>

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+# Bild
+
+`bild` is the universal build tool. It can build and test everything in the repo.
+
+Examples:
+```bash
+bild --test Omni/Bild.hs         # Build and test a namespace
+bild --time 0 Omni/Cloud.nix     # Build with no timeout
+bild --plan Omni/Test.hs         # Analyze build without building
+```
+
+When the executable is built, the output will go to `_/bin`. Example:
+
+```bash
+# build the example executable
+bild Omni/Bild/Example.py
+# run the executable
+_/bin/example
+```
+
+## Adding New Dependencies
+
+### Python Packages
+
+To add a new Python package as a dependency:
+
+1. Add the package name to `Omni/Bild/Deps/Python.nix` (alphabetically sorted)
+2. Use it in your Python file with `# : dep <package-name>` comment at the top
+3. Run `bild <yourfile.py>` to build with the new dependency
+
+Example:
+```python
+# : out myapp
+# : dep stripe
+# : dep pytest
+import stripe
+```
+
+The package name must match the nixpkgs python package name (usually the PyPI name).
+Check available packages: `nix-env -qaP -A nixpkgs.python3Packages | grep <name>`