fix(forge): classify a forge by the brand in the hostname, not by DNS label

dev/wt.example.toml

@@ -21,7 +21,7 @@
 #
 # ## Forge platform
 #
-# Name the forge explicitly for SSH aliases or self-hosted instances, where it can't be detected from the remote URL:
+# The forge is read from the remote's hostname: any host carrying `github`, `gitlab`, or `gitea` anywhere in it, plus the Azure DevOps service domains. Name the forge explicitly for a host carrying none of those, such as a Forgejo instance at `forge.example.com`:
 #
 # [forge]
 # platform = "github"  # or "gitlab", "gitea" (experimental), "azure-devops" (experimental)

docs/content/config.md

@@ -536,7 +536,7 @@ url = "http://localhost:{{ branch | hash_port }}"
 
 ## Forge platform
 
-Name the forge explicitly for SSH aliases or self-hosted instances, where it can't be detected from the remote URL:
+The forge is read from the remote's hostname: any host carrying `github`, `gitlab`, or `gitea` anywhere in it, plus the Azure DevOps service domains. Name the forge explicitly for a host carrying none of those, such as a Forgejo instance at `forge.example.com`:
 
 ```toml
 [forge]

plugins/worktrunk/skills/worktrunk/reference/config.md

@@ -531,7 +531,7 @@ url = "http://localhost:{{ branch | hash_port }}"
 
 ## Forge platform
 
-Name the forge explicitly for SSH aliases or self-hosted instances, where it can't be detected from the remote URL:
+The forge is read from the remote's hostname: any host carrying `github`, `gitlab`, or `gitea` anywhere in it, plus the Azure DevOps service domains. Name the forge explicitly for a host carrying none of those, such as a Forgejo instance at `forge.example.com`:
 
 ```toml
 [forge]

src/cli/mod.rs

@@ -2401,7 +2401,7 @@ url = "http://localhost:{{ branch | hash_port }}"
 
 ## Forge platform
 
-Name the forge explicitly for SSH aliases or self-hosted instances, where it can't be detected from the remote URL:
+The forge is read from the remote's hostname: any host carrying `github`, `gitlab`, or `gitea` anywhere in it, plus the Azure DevOps service domains. Name the forge explicitly for a host carrying none of those, such as a Forgejo instance at `forge.example.com`:
 
 ```toml
 [forge]

src/commands/config/show.rs

@@ -26,7 +26,6 @@ use worktrunk::styling::{
 
 use crate::cli::{SwitchFormat, version_str};
 use crate::commands::configure_shell::{ConfigAction, ConfigureResult, scan_shell_configs};
-use crate::commands::legacy_forge_alias_diagnostic;
 use crate::commands::list::ci_status::CiToolsStatus;
 use crate::help_pager::show_help_in_pager;
 use crate::llm::test_commit_generation;
@@ -506,21 +505,11 @@ fn render_diagnostics(out: &mut String) -> anyhow::Result<()> {
             }
         }
         None => {
-            if let Some(alias) = repo.legacy_forge_alias() {
-                writeln!(
-                    out,
-                    "{}",
-                    warning_message(legacy_forge_alias_diagnostic(&alias))
-                )?;
-            } else {
-                writeln!(
-                    out,
-                    "{}",
-                    hint_message(
-                        "CI status requires GitHub, GitLab, Gitea, or Azure DevOps remote"
-                    )
-                )?;
-            }
+            writeln!(
+                out,
+                "{}",
+                hint_message("CI status requires GitHub, GitLab, Gitea, or Azure DevOps remote")
+            )?;
         }
     }
 

src/commands/list/collect/mod.rs

@@ -2017,21 +2017,6 @@ pub fn collect(
         return Ok(None);
     }
 
-    // The old substring classifier treated branded SSH aliases such as
-    // `github-personal` as forges. Keep provider dispatch on the safer exact
-    // boundary, but explain the migration once when this collection actually
-    // requested CI. Do this after final table rendering so resolving the
-    // effective URL cannot add a git subprocess to the skeleton's critical
-    // path. Picker collections route through the warning stash; the statusline
-    // uses `populate_item`, not this path, and remains silent.
-    if collected.ci
-        && let Some(alias) = repo.legacy_forge_alias()
-    {
-        emit_warning(
-            warning_message(crate::commands::legacy_forge_alias_diagnostic(&alias)).to_string(),
-        );
-    }
-
     // Status symbols are now computed during data collection (both modes), no fallback needed
 
     // Display collection errors/warnings (after table rendering)

src/commands/mod.rs

@@ -71,7 +71,6 @@ pub(crate) use worktree::{
 pub(crate) use worktrunk::shell::Shell;
 
 use color_print::cformat;
-use worktrunk::git::LegacyForgeAlias;
 use worktrunk::styling::{eprintln, format_with_gutter};
 
 pub(crate) fn flag_pair(positive: bool, negative: bool) -> Option<bool> {
@@ -82,16 +81,6 @@ pub(crate) fn flag_pair(positive: bool, negative: bool) -> Option<bool> {
     }
 }
 
-/// Actionable compatibility diagnostic for branded SSH aliases that no longer
-/// cross the exact-label forge-classification boundary.
-pub(crate) fn legacy_forge_alias_diagnostic(alias: &LegacyForgeAlias) -> String {
-    let platform = alias.platform().to_string();
-    let host = alias.host();
-    cformat!(
-        "SSH host alias <bold>{host}</> is not auto-detected as a forge; enable CI status and <bold>wt switch --prs</> with <bold>forge.platform = \"{platform}\"</> @ <bold>.config/wt.toml</>"
-    )
-}
-
 /// Format command execution label with optional command name.
 ///
 /// Examples:

src/commands/picker/prs.rs

@@ -50,7 +50,6 @@ use unicode_width::UnicodeWidthStr;
 use worktrunk::git::{ForgeKind, RefType, Repository};
 use worktrunk::styling::{HINT_SYMBOL, INFO_SYMBOL, StyledLine, WARNING_SYMBOL, warning_message};
 
-use super::super::legacy_forge_alias_diagnostic;
 use super::super::list::ci_status::{
     CiSource, CiStatus, GitHubComment, GitHubPrInfo, PrRef, PrStatus, ReviewState,
     non_interactive_cmd, tool_available,
@@ -641,9 +640,6 @@ fn fetch_open_prs(repo: &Repository) -> anyhow::Result<Vec<PrEntry>> {
             anyhow::bail!("--prs supports GitHub and GitLab; this repository's forge is {other}")
         }
         None => {
-            if let Some(alias) = repo.legacy_forge_alias() {
-                anyhow::bail!("{}", legacy_forge_alias_diagnostic(&alias));
-            }
             anyhow::bail!("--prs could not determine the forge from the remote URL")
         }
     }
@@ -1841,24 +1837,6 @@ mod tests {
         );
     }
 
-    #[test]
-    fn fetch_open_prs_explains_legacy_forge_alias_configuration() {
-        let test = worktrunk::testing::TestRepo::with_initial_commit();
-        test.run_git(&[
-            "remote",
-            "add",
-            "origin",
-            "git@github-personal:owner/repo.git",
-        ]);
-        let err = fetch_open_prs(&test.repo)
-            .expect_err("expected --prs to require explicit forge config");
-        let message = err.to_string();
-        assert!(
-            message.contains("github-personal") && message.contains("forge.platform = \"github\""),
-            "unexpected error: {err:#}"
-        );
-    }
-
     #[test]
     fn fetch_open_prs_bails_on_an_unsupported_forge() {
         // A recognized-but-unsupported forge (here Gitea, by its host) reports

src/config/project.rs

@@ -94,9 +94,9 @@ pub struct ProjectCommitGenerationConfig {
 
 /// Project-level forge configuration.
 ///
-/// Names the forge explicitly, for repos where URL-based detection can't
-/// determine it (e.g., SSH host aliases, GitHub Enterprise, or self-hosted
-/// GitLab with custom domains).
+/// Names the forge explicitly, for a remote whose hostname carries no forge
+/// name for [`ForgeKind::from_host`](crate::git::ForgeKind::from_host) to read
+/// (a Forgejo instance at `forge.example.com`, a company git server).
 ///
 /// # Example
 ///