Split dvm

CHANGELOG.md

@@ -4,6 +4,8 @@
 
 - Added VM config validation before Lima template rendering for VM names, users, sizing,
   code directories, host IPs, and port forwards.
+- Internal: split `bin/dvm` into a small dispatcher plus sourced shell libraries under
+  `share/dvm/lib`.
 - Added `dvm cp` to copy files between the host and a DVM VM through Lima, with
   relative guest paths resolved under `DVM_CODE_DIR`.
 - Fixed `dvm cp` without copy options on macOS Bash 3.2.

CONTRIBUTING.md

@@ -1,7 +1,8 @@
 # Contributing
 
-DVM is intentionally small. Keep the wrapper boring and put setup behavior in recipes
-or docs unless the wrapper truly has to bridge host config to Lima.
+DVM is intentionally small. Keep `bin/dvm` as a small dispatcher, put host-side wrapper
+helpers in `share/dvm/lib`, and put setup behavior in recipes or docs unless the
+wrapper truly has to bridge host config to Lima.
 
 Good fits:
 

README.md

@@ -29,9 +29,9 @@ Install the wrapper:
 
 This installs a small launcher into `~/.local/bin` and copies defaults into
 `~/.config/dvm` without overwriting existing files. The launcher runs each invocation
-from a temporary snapshot of `bin/dvm`, so editing or pulling this repo cannot corrupt a
-long-running `dvm apply`. Bundled recipes, the Lima template, and example VM configs
-stay in the repo under `share/dvm`.
+from a temporary snapshot of `bin/dvm` and its shell libraries, so editing or pulling
+this repo cannot corrupt a long-running `dvm apply`. Bundled recipes, the Lima
+template, and example VM configs stay in the repo under `share/dvm`.
 
 ## Commands