Added:

- Custom build flags: `build.cflags` and `build.ldflags`
- Recursive source discovery inside `src/`
- Path dependencies with auto include/lib resolution and `dcr.lock` generation (experimental)
- Add docs/index.md and docs/dcr-toml.md

docs/dcr-toml.md

@@ -0,0 +1,53 @@
+# dcr.toml
+
+`dcr.toml` describes your project, build options, and dependencies.
+
+## Example
+
+```toml
+[package]
+name = "neoarc-frontent"
+version = "0.1.0"
+
+[build]
+language = "c"
+standard = "c11"
+compiler = "gcc"
+# Custom compile/link flags (optional)
+cflags = ["-D_POSIX_C_SOURCE=200809L", "-Wall", "-Wextra", "-O2", "-Ilib/frecli"]
+ldflags = ["-Llib/frecli", "-lfrecli", "-lm"]
+
+[dependencies]
+frecli = { path = "./lib/frecli", include = ["."], lib = ["."], libs = ["frecli"] }
+```
+
+## Sections
+
+### [package]
+- `name`     (string, required)
+- `version`  (string, required)
+
+### [build]
+- `language` (string, required): `c`, `c++`, `cpp`, or `cxx`
+- `standard` (string, required): e.g. `c99`, `c11`, `c++17`
+- `compiler` (string, required): `gcc`, `clang`, `cl`(msvc), or `clang-cl`
+- `cflags`   (string[], optional): additional compile flags
+- `ldflags`  (string[], optional): additional link flags
+
+### [dependencies]
+Only `path` dependencies are supported right now.
+
+```toml
+[dependencies]
+fmt = { path = "./lib/fmt", include = ["include"], lib = ["lib"], libs = ["fmt"] }
+```
+
+Rules:
+- `path` can be absolute or relative to the project root.
+- If `include`/`lib` are missing, DCR looks for `include`, `lib`, or `lib64` under the dependency path.
+- If not found, build fails with a message suggesting to add `include`/`lib`.
+- `libs` defaults to the dependency name.
+
+## Source Discovery
+
+DCR compiles all `.c`/`.cpp` files under `src/` recursively. The file containing `main()` can be located anywhere in that tree.