Let auto-build slots run their own build command under their own name

A branches.<name>.autoBuild.times entry is now either a plain HH:MM
string or an object with time, its own buildCommand, and a name, so a
nightly slot can run a fuller check than the on-commit builds. The
watcher passes the slot's command and name to the executor, persisted in
the build result — UI restarts, gittally retry, and the startup recovery
repeat a build with the command and name it originally ran under.

A named slot (e.g. master@nightly) gets its own pool: repository
grouping, retention count, branches-view row (sorted after its branch),
latest status, and permanent latest-green artifact link are keyed by the
build name, while origin lookups, gone-branch pruning, worktrees, and
Gitea links/statuses stay keyed by the real branch. Without a name,
slot builds share the branch's pool as before.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/main/kotlin/de/hoennig/gittally/commands/ConsoleBuildRunner.kt

@@ -37,8 +37,10 @@ class ConsoleBuildRunner(
         branch: String,
         commit: String,
         workingDir: Path = Paths.get("."),
+        buildCommandOverride: String? = null,
+        name: String = branch,
     ): BuildStatus {
-        val build = buildExecutor.startBuild(branch, commit, workingDir)
+        val build = buildExecutor.startBuild(branch, commit, workingDir, buildCommandOverride, name)
         var printed = 0L
         var result: BuildResult? = null
         while (result?.status?.isTerminal != true) {

src/main/kotlin/de/hoennig/gittally/commands/InitCommand.kt

@@ -199,7 +199,12 @@ class InitCommand(
                 requirePullRequest: false
                 autoBuild:
                   enabled: false        # whether to rebuild on schedule
-                  times: ["01:00"]      # UTC times HH:MM for scheduled builds
+                  # UTC times HH:MM for scheduled builds; an entry may carry its own
+                  # command and a name for a separate history/artifact pool:
+                  #   - time: "01:00"
+                  #     buildCommand: ./gradlew fullCheck
+                  #     name: main@nightly
+                  times: ["01:00"]
                 docker:
                   enabled: false        # run clean/build commands in a Docker container instead of natively
                   image: ""             # image for the build container; required when enabled

src/main/kotlin/de/hoennig/gittally/commands/RetryCommand.kt

@@ -34,7 +34,7 @@ class RetryCommand(
         val failed: List<BuildResult>
         try {
             fetchBestEffort()
-            failed = repository.latestPerBranch().filter { it.status == BuildStatus.FAILED }
+            failed = repository.latestPerName().filter { it.status == BuildStatus.FAILED }
         } catch (e: Exception) {
             System.err.println("error: ${e.message}")
             return ExitCode.USAGE
@@ -51,7 +51,8 @@ class RetryCommand(
                 continue
             }
             println("retrying branch ${result.branch} at commit ${commit.take(12)}")
-            val status = consoleBuildRunner.buildAndStream(result.branch, commit, workingDir)
+            // a failed auto-slot build retries with its recorded command, under its name
+            val status = consoleBuildRunner.buildAndStream(result.branch, commit, workingDir, result.buildCommandOverride, result.name)
             if (status != BuildStatus.SUCCESS) {
                 anyFailed = true
             }

src/main/kotlin/de/hoennig/gittally/commands/StatusCommand.kt

@@ -26,7 +26,7 @@ class StatusCommand(
     var history: Boolean = false
 
     override fun call(): Int {
-        val results = if (history) repository.history() else repository.latestPerBranch()
+        val results = if (history) repository.history() else repository.latestPerName()
         if (results.isEmpty()) {
             println("(no builds recorded)")
         } else {
@@ -40,7 +40,7 @@ class StatusCommand(
         val rows =
             results.map {
                 listOf(
-                    it.branch,
+                    it.name,
                     it.status.name.lowercase(),
                     it.commit.take(12),
                     UiFormats.timestamp(it.startedAt),