Replace cross-rs with cargo-zigbuild for cross-compilation

cross-rs has no Docker image for macOS targets and the Windows image
has a broken cargo PATH, causing all non-Linux builds to fail.
Zig's toolchain handles Linux→macOS and Linux→Windows cross-compilation
from a single ubuntu runner. Also add --target to the native Linux build
so the output path matches the Package step.

.gitea/workflows/build.yml

@@ -1,8 +1,11 @@
 name: Build
 
 on:
-  release:
+  push:
-    types: [published]
+    branches: [main]
+    tags: ["*"]
+  pull_request:
+    branches: [main]
 
 jobs:
   build:
@@ -62,7 +65,7 @@ jobs:
           fi
 
       - name: Upload artifact
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: ${{ matrix.archive }}
           path: target/${{ matrix.target }}/release/${{ matrix.archive }}

CONTRIBUTING.md

@@ -1,29 +0,0 @@
-# Contributing
-
-## Setup
-
-```bash
-git clone https://onixbyte.dev/onixbyte/claude-code-skill-manager.git
-cd claude-code-skill-manager
-cargo build
-```
-
-## Before submitting
-
-- Run `cargo fmt` to format your code
-- Run `cargo clippy` and fix any warnings
-- Ensure `cargo build` succeeds
-
-## Pull requests
-
-- Keep changes focused and atomic
-- Write clear commit messages following the [conventional commits](https://www.conventionalcommits.org/) format
-- Open PRs against the `main` branch
-
-## Issues
-
-Bug reports and feature requests are welcome. Please include steps to reproduce when reporting bugs.
-
-## Licence
-
-By contributing, you agree that your contributions will be licensed under the [MIT Licence](LICENCE).

LICENCE

@@ -1,21 +0,0 @@
-MIT License
-
-Copyright (c) 2025 OnixByte
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.

README.md

@@ -1,103 +0,0 @@
-# Claude Code Skill Manager (CCSM)
-
-A CLI tool for discovering, installing, and managing [Claude Code](https://claude.ai/code) skills from Git-based marketplace repositories.
-
-## Installation
-
-### From source
-
-```bash
-git clone https://onixbyte.dev/onixbyte/claude-code-skill-manager.git
-cd claude-code-skill-manager
-cargo install --path .
-```
-
-### Pre-built binaries
-
-Download the latest binary for your platform from the [Releases](https://onixbyte.dev/onixbyte/claude-code-skill-manager/releases) page.
-
-## Quick start
-
-```bash
-# Register a skill marketplace
-ccsm marketplace add https://github.com/example/skills
-
-# Browse available skills
-ccsm search
-
-# Install a skill
-ccsm install my-skill
-
-# List installed skills
-ccsm list
-
-# See details about a skill
-ccsm info my-skill
-
-# Update installed skills
-ccsm update
-
-# Remove a skill
-ccsm remove my-skill
-```
-
-## Commands
-
-### Marketplace management
-
-| Command | Description |
-|---|---|
-| `ccsm marketplace add <url>` | Register a Git repository as a skill marketplace |
-| `ccsm marketplace remove <name>` | Unregister a marketplace |
-| `ccsm marketplace list` | List registered marketplaces |
-| `ccsm marketplace update [name]` | Refresh marketplace manifests |
-
-### Skill management
-
-| Command | Description |
-|---|---|
-| `ccsm search [query]` | Search available skills across all marketplaces |
-| `ccsm install <name>` | Install a skill (supports `--copy` and `--link` modes) |
-| `ccsm list` | Show installed skills |
-| `ccsm info <name>` | Show details about an installed skill |
-| `ccsm update [name]` | Update installed skills to latest |
-| `ccsm remove <name>` | Uninstall a skill |
-
-## How it works
-
-Skills are directories placed under `~/.claude/skills/` that Claude Code reads at startup. CCSM manages these directories by pulling skill definitions from marketplace repositories that expose a `skills.json` manifest:
-
-```json
-{
-  "name": "My Marketplace",
-  "skills": [
-    {
-      "name": "example-skill",
-      "description": "An example Claude Code skill",
-      "repository": "https://github.com/user/skill-repo",
-      "branch": "main"
-    }
-  ]
-}
-```
-
-## Deploy modes
-
-- **Copy** (default): Skill files are physically copied to `~/.claude/skills/<name>/`.
-- **Link**: A symlink is created from `~/.claude/skills/<name>/` to the local store, useful for development.
-
-## Building
-
-```bash
-cargo build --release
-```
-
-Cross-compilation targets: Linux (amd64), macOS (amd64), and Windows (amd64) via `cargo-zigbuild`.
-
-## Contributing
-
-See [CONTRIBUTING.md](CONTRIBUTING.md).
-
-## Licence
-
-[MIT](LICENCE)