report: reproduce the pre-refactor CLI output through the ports

Instead of carrying raw UI in core, the ports now represent everything
the CLI used to do inline:

- Prompter::present shows context outside of a question (the wizard
  summary screen, the vendoring notice spacing); TerminalPrompter
  prints it on stdout exactly like the println!s it replaces, server
  embeds forward it as a display event.
- generate_entry returns the generated entry (package, versions,
  series, path) instead of printing; the CLI renders the same lines.
- BuildTarget carries a flow-composed display line and a tee_log flag:
  the terminal adapter renders it verbatim ("Building source package
  ...", "Building ... for series/arch", "Uploading ... to ...") and
  uploads open no build log.
- The unmet build-dependency diagnostics are rendered by the CLI from
  the typed error, in the original order (details, then summary).
- --verbose constructs no live view at all (an idle widget used to
  linger), and the re-vendor offer only logs when it is actually
  asked, so headless runs print the error exactly once.

src/ui/deb.rs

@@ -83,8 +83,7 @@ impl DebUi {
             let pb = multi.add(ProgressBar::new(0));
             pb.enable_steady_tick(Duration::from_millis(80));
             pb.set_style(spinner_style());
-            // Neutral identity until a `target` event names the build
-            pb.set_prefix("pkh");
+            pb.set_prefix("Building package");
             pb.set_message("(starting…)");
             pb
         } else {
@@ -270,24 +269,18 @@ impl DebUi {
 /// widget.
 impl crate::report::BuildView for DebUi {
     fn target(&self, target: BuildTarget<'_>) {
-        let kind = if target.source_only {
-            "source package "
-        } else {
-            ""
-        };
         if self.shared.enabled {
-            self.shared.top.set_prefix(format!(
-                "Building {kind}{} ({}) for {}",
-                target.package, target.version, target.target
-            ));
+            self.shared.top.set_prefix(target.display.clone());
+        }
+        if target.tee_log {
+            let kind = if target.source_only { "build" } else { "deb" };
+            self.open_log(
+                kind,
+                target.package,
+                target.version,
+                &format!("for {}", target.target),
+            );
         }
-        let log_kind = if target.source_only { "build" } else { "deb" };
-        self.open_log(
-            log_kind,
-            target.package,
-            target.version,
-            &format!("for {}", target.target),
-        );
     }
 
     fn phase(&self, name: &str, classifier: Box<dyn Classifier>) {

src/ui/prompt.rs

@@ -167,6 +167,10 @@ impl crate::report::Prompter for TerminalPrompter {
         println!("{key_type} key fingerprint is {fingerprint}.");
         confirm("Accept and store this host key?", false).unwrap_or(false)
     }
+
+    fn present(&self, text: &str) {
+        println!("{text}");
+    }
 }
 
 /// Run `prompt` with the terminal in raw mode, always restoring it