feat: enable GitHub aliasing by default matching JS behavior

- Change --github-alias flag to --no-github-alias (enabled by default)
- GitHub aliasing now matches @unjs/changelogen default behavior
- Token still required for API calls (reads from GITHUB_TOKEN or GH_TOKEN env vars)
- Changed warning to debug message when token not provided (since it's default)
- Users can disable with --no-github-alias flag if desired
- All tests passing (27 suites)
- Matches parity with JS version per https://github.com/unjs/changelogen/blob/main/CHANGELOG.md

Co-authored-by: MuntasirSZN <161931072+MuntasirSZN@users.noreply.github.com>

Author: Copilot

src/cli.rs

@@ -63,7 +63,7 @@ pub fn run() -> Result<ExitCode> {
             clean,
             sign,
             yes,
-            github_alias,
+            no_github_alias,
             github_token,
         } => {
             // Read GitHub token from env if not provided
@@ -86,7 +86,7 @@ pub fn run() -> Result<ExitCode> {
                 clean,
                 sign,
                 yes,
-                github_alias,
+                github_alias: !no_github_alias,
                 github_token,
             })?;
             if let Some(path) = output {
@@ -123,7 +123,7 @@ pub fn run() -> Result<ExitCode> {
             clean,
             sign,
             yes,
-            github_alias,
+            no_github_alias,
             github_token,
         } => {
             // Read GitHub token from env if not provided
@@ -146,7 +146,7 @@ pub fn run() -> Result<ExitCode> {
                 clean,
                 sign,
                 yes,
-                github_alias,
+                github_alias: !no_github_alias,
                 github_token,
             })?;
             if outcome.wrote {

src/cli_def.rs

@@ -55,9 +55,9 @@ pub enum Commands {
         /// Auto-confirm (skip prompts)
         #[arg(long)]
         yes: bool,
-        /// Enable GitHub aliasing (convert email addresses to @handles)
+        /// Disable GitHub aliasing (enabled by default, converts email addresses to @handles)
         #[arg(long)]
-        github_alias: bool,
+        no_github_alias: bool,
         /// GitHub token for API access (reads from GITHUB_TOKEN or GH_TOKEN env vars)
         #[arg(long)]
         github_token: Option<String>,
@@ -84,9 +84,9 @@ pub enum Commands {
         sign: bool,
         #[arg(long)]
         yes: bool,
-        /// Enable GitHub aliasing (convert email addresses to @handles)
+        /// Disable GitHub aliasing (enabled by default, converts email addresses to @handles)
         #[arg(long)]
-        github_alias: bool,
+        no_github_alias: bool,
         /// GitHub token for API access (reads from GITHUB_TOKEN or GH_TOKEN env vars)
         #[arg(long)]
         github_token: Option<String>,

src/pipeline.rs

@@ -135,8 +135,8 @@ pub fn run_release(opts: ReleaseOptions) -> Result<ReleaseOutcome> {
                     warn!("failed to resolve GitHub handles: {}", e);
                 }
             } else {
-                warn!(
-                    "--github-alias specified but no token provided (use --github-token or GITHUB_TOKEN env var)"
+                debug!(
+                    "GitHub aliasing enabled but no token provided; skipping handle resolution (set GITHUB_TOKEN or GH_TOKEN env var, or use --no-github-alias to disable)"
                 );
             }
         }