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/put/mod.rs

@@ -26,7 +26,7 @@ use crate::debian::checksums::FileChecksums;
 use crate::debian::control::ControlInfo;
 use crate::debian::version::DebianVersion;
 use crate::launchpad;
-use crate::report::{BuildView, Prompter};
+use crate::report::{BuildTarget, BuildView, Prompter};
 
 /// Everything `put` needs to run.
 pub struct PutOptions<'a> {
@@ -89,10 +89,20 @@ async fn put_impl(opts: &PutOptions<'_>) -> Result<(), Box<dyn std::error::Error
     };
     let changes = changes::parse(&changes_path)?;
 
-    opts.view.message(&format!(
-        "Uploading {} {} to {}",
-        changes.source, changes.version, target.label
-    ));
+    // The summary line stays up for the whole flow: rendered as the view's
+    // persistent status, with the per-step messages below it
+    opts.view.target(BuildTarget {
+        package: &changes.source,
+        version: &changes.version,
+        target: &target.label,
+        display: format!(
+            "Uploading {} {} to {}",
+            changes.source, changes.version, target.label
+        ),
+        source_only: false,
+        // An upload runs no subprocess: nothing to tee
+        tee_log: false,
+    });
     changes::validate(&changes)?;
 
     // Pre-flight checks for everything the upload queue only rejects after