docs(installer): drop phase references that are now this build's behaviour

Five comments described the patch tier as work a later phase would do. It is
this phase, so they read as stale the moment the code landed.

Co-Authored-By: Claude <noreply@anthropic.com>

src/install.rs

@@ -619,7 +619,7 @@ fn build_record(prior: Option<&InstallRecord>, run: &Deployment<'_>) -> InstallR
             files: overlay::file_records(planned),
         }),
         // A `--verify` run installs no sidecar and must not erase the record of one that is
-        // already there; the same reasoning keeps the patch section (Phase 3) and any field a
+        // already there; the same reasoning keeps the patch section and any field a
         // newer installer wrote intact. A record that forgot a running service would make
         // `doctor` and `uninstall` forget it too.
         link: match sidecar {

src/paths.rs

@@ -145,7 +145,8 @@ mod tests {
     #[test]
     fn the_installers_own_files_sit_in_the_state_dir() {
         // Everything the installer owns lives together, so `uninstall` (Phase 4) has one place to
-        // clean and `doctor` has one place to read. The cached patch set joins them in Phase 3.
+        // clean and `doctor` has one place to read. The cached patch set and the pre-image
+        // copies of every patched file live there too.
         let l = platform_layout();
         assert_eq!(l.install_record().parent(), Some(l.state_dir.as_path()));
         assert_eq!(l.sidecar_config().parent(), Some(l.state_dir.as_path()));

src/record.rs

@@ -44,7 +44,7 @@ pub struct InstallRecord {
     #[serde(default, skip_serializing_if = "Option::is_none")]
     pub link: Option<serde_json::Value>,
     /// The patch tier: one entry per feature actually in place, with the rung that applied each of
-    /// its patches (Phase 3).
+    /// its patches.
     ///
     /// Raw JSON for the same reason as [`InstallRecord::link`] — a record written by a newer
     /// installer survives a re-run here intact. Read it with [`InstallRecord::patch_records`].

src/servuo.rs

@@ -23,7 +23,7 @@ pub struct ServUoRoot {
     pub path: PathBuf,
     /// `None` when `Server/AssemblyInfo.cs` is absent or unparseable. Reported as "unknown", which
     /// is treated exactly like any other non-57.4 answer: the base install proceeds, and the patch
-    /// tier (Phase 3) takes its unsupported path.
+    /// tier takes its unsupported path.
     pub version: Option<String>,
 }
 
@@ -312,7 +312,7 @@ mod tests {
     #[test]
     fn an_unreadable_version_is_unknown_and_unsupported() {
         // "Unknown" must not be optimistically treated as 57.4: an unreadable version is not
-        // evidence of a good one, and it gates the patch tier in Phase 3.
+        // evidence of a good one, and it is what gates the patch tier.
         let tmp = TempDir::new("rg-test-noversion").unwrap();
         let root = tmp.path().join("srv");
         fake_root(&root);