tooling improvements

docs/packages.md

@@ -9,11 +9,11 @@ Packages are the fundamental unit of code organization and sharing in ƿit.
 
 ## Package Structure
 
-A package is a directory containing a `pit.toml` manifest:
+A package is a directory containing a `cell.toml` manifest:
 
 ```
 mypackage/
-├── pit.toml         # package manifest
+├── cell.toml         # package manifest
 ├── main.ce          # entry point (optional)
 ├── utils.cm         # module
 ├── helper/
@@ -23,7 +23,7 @@ mypackage/
     └── helpers.cm   # private module (internal/ only)
 ```
 
-## pit.toml
+## cell.toml
 
 The package manifest declares metadata and dependencies:
 
@@ -47,7 +47,7 @@ mylib = "/Users/john/work/mylib"
 When importing with `use()`, ƿit searches in order:
 
 1. **Local package** — relative to package root
-2. **Dependencies** — via aliases in `pit.toml`
+2. **Dependencies** — via aliases in `cell.toml`
 3. **Core** — built-in ƿit modules
 
 ```javascript
@@ -179,7 +179,7 @@ C files in a package are compiled into per-file dynamic libraries:
 
 ```
 mypackage/
-├── pit.toml
+├── cell.toml
 ├── render.c      # compiled to lib/mypackage/render.dylib
 └── physics.c     # compiled to lib/mypackage/physics.dylib
 ```