Added:

- Full Git dependency support in `dcr.toml`
  - Support for `git`, `branch`, `tag`, and `rev` fields
  - Automatic cloning and checkout via `git2`
  - Dependencies are stored in `target/<profile>/deps/git/`
- New `dcr add` command for easy dependency management
  - Short syntax: `github:user/repo`, `gitlab:user/repo`, `path:/to/lib`
  - Automatic GitHub resolution for `git:user/repo`
- Visual feedback for dependency fetching with in-place status updates ("Fetching" → "Fetched")
- Modular dependency management architecture in `src/core/deps/`

docs/SUMMARY.md

@@ -21,6 +21,7 @@
 
 * [Global options](commands/global-options.md)
 * [dcr init/new](commands/dcr-init-or-new.md)
+* [dcr add](commands/dcr-add.md)
 * [dcr build](commands/dcr-build.md)
 * [dcr run](commands/dcr-run.md)
 * [dcr clean](commands/dcr-clean.md)

docs/commands/dcr-add.md

@@ -0,0 +1,32 @@
+# dcr add
+
+Add a dependency to `dcr.toml`.
+
+## Usage
+
+```bash
+dcr add <name> <source> [options]
+```
+
+## Sources
+
+- `path:./path/to/lib`: Local directory.
+- `github:user/repo`: GitHub repository.
+- `gitlab:user/repo`: GitLab repository.
+- `git:host.com/user/repo`: Generic Git repository (HTTPS).
+- `https://...`: Full Git URL.
+
+## Options
+
+- `--branch <name>`: Use a specific branch.
+- `--tag <name>`: Use a specific tag.
+- `--rev <sha>`: Use a specific commit hash.
+
+## Examples
+
+```bash
+dcr add my_lib path:./libs/my_lib
+dcr add cool_lib github:user/cool_lib
+dcr add shared_lib gitlab:org/shared --branch develop
+dcr add custom_lib git:git.internal.com/r/lib --tag v1.0.0
+```

docs/dependencies-and-build/dependency-format.md

@@ -2,25 +2,39 @@
 
 Dependencies are defined in `dcr.toml` under `[dependencies]`.
 
-## Full example
+## Full example (Path)
 
 ```toml
 [dependencies]
 fmt = { path = "./third_party/fmt", include = ["include"], lib = ["lib"], libs = ["fmt"] }
 ```
 
+## Full example (Git)
+
+```toml
+[dependencies]
+json = { git = "https://github.com/nlohmann/json", tag = "v3.11.2" }
+```
+
 ## Field reference
 
-- `path`: required dependency root path.
+- `path`: local path to dependency root.
+- `git`: URL of Git repository.
+- `branch`: Git branch name.
+- `tag`: Git tag name.
+- `rev`: Git commit SHA.
 - `include`: optional include subpaths (absolute or relative to dep root).
 - `lib`: optional library subpaths (absolute or relative to dep root).
 - `libs`: optional linker library names.
 
-## Common valid compact form
+## Common valid compact forms
 
 ```toml
 [dependencies]
 mylib = { path = "./libs/mylib" }
+gitlib = { git = "https://github.com/user/repo" }
+# Shortest form for path
+simple = "./libs/simple"
 ```
 
-In this form DCR will try defaults for include/lib dirs and use `mylib` as the linker library name.
+In these forms DCR will try defaults for include/lib dirs and use the dependency name as the linker library name.