chore: migrate deps to namespace syntax (mcpp 0.0.6) (#5)

* chore: migrate deps to namespace syntax (mcpp 0.0.6)

Updates mcpp.toml to use explicit namespace fields:
- [package].namespace added
- [package].name uses short name only
- [dependencies.compat] / [dev-dependencies.compat] for non-modular libs
- [dependencies.mcpplibs.capi] for C API wrappers

* ci: retrigger with fixed mcpp 0.0.6

* ci: retrigger

* ci: retrigger with mcpp 0.0.7

Author: Sunrisepeak

.github/workflows/ci.yml

@@ -23,17 +23,17 @@ jobs:
           "/tmp/xlings-${XLINGS_VERSION}-linux-x86_64/subos/default/bin/xlings" self install
           echo "$HOME/.xlings/subos/current/bin" >> "$GITHUB_PATH"
 
-      - name: Install workspace tools (.xlings.json → mcpp 0.0.4)
+      - name: Install workspace tools (.xlings.json → mcpp 0.0.7)
         run: xlings install -y
 
       # Cache mcpp's self-bootstrapped sandbox (musl-gcc + binutils +
       # glibc + ninja + patchelf, ~800 MB). Toolchain set is pinned by
-      # mcpp 0.0.4, so a fixed key suffices.
+      # mcpp 0.0.7, so a fixed key suffices.
       - name: Cache mcpp sandbox
         uses: actions/cache@v4
         with:
-          path: ~/.xlings/data/xpkgs/xim-x-mcpp/0.0.4/registry
-          key: mcpp-sandbox-${{ runner.os }}-mcpp0.0.4
+          path: ~/.xlings/data/xpkgs/xim-x-mcpp/0.0.7/registry
+          key: mcpp-sandbox-${{ runner.os }}-mcpp0.0.7
 
       - name: Build with mcpp
         run: mcpp build

.xlings.json

@@ -1,5 +1,5 @@
 {
   "workspace": {
-    "mcpp": { "linux": "0.0.4" }
+    "mcpp": { "linux": "0.0.7" }
   }
 }

mcpp.toml

@@ -1,14 +1,12 @@
 [package]
-name        = "mcpplibs.cmdline"
+namespace   = "mcpplibs"
+name        = "cmdline"
 version     = "0.0.2"
 description = "A simple command-line parsing library/framework for modern C++"
 license     = "Apache-2.0"
 authors     = ["mcpplibs"]
 repo        = "https://github.com/mcpplibs/cmdline"
 
-# Library target — exposes module `mcpplibs.cmdline` to dependents.
-# Sources default to src/**/*.{cppm,cpp,cc,c}; tests/ and examples/ are
-# discovered separately (`mcpp test` / standalone builds).
 [targets.cmdline]
 kind = "lib"