Fix QR-code generation

PLANS.md

@@ -122,6 +122,7 @@ Each row is a delivery milestone, not a completion claim. Expand its record befo
 | 10  | Visible styled keyboard quick reference in bottom panel | 8; existing M7 TUI                        | accepted    |
 | 11  | Valid subnet routes shown as a capability limitation    | 10                                        | accepted    |
 | 12  | Aligned, responsive client table                        | 11                                        | accepted    |
+| 13  | Compact terminal QR disclosure                           | 12                                        | accepted    |
 
 ### Milestone 1 — Rust foundation, settings, and domain states
 
@@ -3544,8 +3545,57 @@ source in [M12 evidence](docs/evidence/milestone-12.md). Synthetic UI/PTY
 evidence does not establish physical terminal, Alpine or systemd behavior.
 Stop after this milestone; do not resume VM work, commit or deploy.
 
+### Milestone 13 — Compact terminal QR disclosure
+
+Status: accepted (2026-10-27T21:13:30+02:00). M12 is accepted; M9 remains retired and
+unaccepted. This is the user's scoped terminal disclosure repair.
+
+#### Outcome and scope
+
+Render authorized QR modules with two vertical modules per terminal cell,
+explicit dark/light colors, and the complete four-module quiet zone. Fit must
+account for the actual bordered disclosure layout and wrapped delivery notice;
+retain file-backed fallback and Esc cleanup when it cannot fit. Existing file
+delivery, password authorization, and draft/saved/applied behavior remain intact.
+
+#### Tasks and acceptance
+
+| Task | Owner | State | Evidence required |
+| --- | --- | --- | --- |
+| M13.1 | implementer | complete for implementation scope | Compact rendering/layout and focused deterministic tests in `src/tui/render.rs` and test-only QR fixture in `src/delivery/qr.rs` |
+| M13.2 | independent reviewer; repairer | complete | R1–R5 repaired and independently re-reviewed; no actionable scoped finding remains |
+| M13.3 | coordinator | complete | Integrated files checked; pinned Rust gates passed; source and artifact recorded in [M13 evidence](docs/evidence/milestone-13.md) |
+
+- [x] M13-A1: all four two-module cell combinations, odd-height light padding,
+  explicit colors and full quiet zone render correctly.
+- [x] M13-A2: a deterministic nonsecret 73-module matrix uses 73 columns and 37
+  QR rows, with exact fit/fallback dimensions from bordered layout and wrapped notice.
+- [x] M13-A3: fallback points to saved file; resizing redraws the same authorized
+  QR; Esc clears it; no matrix or configuration enters logs, Debug or snapshots.
+- [x] M13-A4: independent review closes findings and focused plus required Rust
+  completion gates pass. Automated render evidence is distinct from manual scanning.
+
+Planned checks: `cargo test --locked tui::render::tests::`, focused QR tests,
+`cargo fmt --all -- --check`, `cargo clippy --locked --all-targets -- -D warnings`,
+`cargo test --locked`, `cargo build --locked --release`, and `git diff --check`.
+Synthetic tests require no Docker or VM; real systemd is outside this scope.
+Evidence will be recorded in `docs/evidence/milestone-13.md`.
+
+#### Outcome and handoff
+
+M13-R1–R5 (P2, closed): fallback visibility at 34×12/20×8, Draft/Saved/Applied
+status, all quiet-zone edges, exact available-area reporting and uncertain
+delivery wording were repaired and independently re-reviewed. [M13 evidence](docs/evidence/milestone-13.md)
+records focused and integrated results. No production or host service was used.
+
+Accepted for the automated TUI rendering scope. A 73-module matrix needs 73×37
+QR cells; the tested bordered layout with a one-row notice fits at 75×44.
+Longer notices increase the required terminal height. Physical terminal and
+phone/decoder scanning remain unverified; M9 systemd acceptance remains retired.
+
 ## Current progress and resume point
 
+- Milestone 13 is accepted (2026-10-27): compact, explicitly colored QR disclosure, complete quiet zone and dimensioned fallback passed synthetic rendering tests, independent R5 closure and pinned Rust gates. [M13 evidence](docs/evidence/milestone-13.md) records the reviewed source and release artifact. No manual scan, Alpine rerun, VM or production validation is claimed.
 - Bounded TUI maintenance TUI-TS-001 (2026-10-27): new-client form creation timestamps now have whole-second UTC precision before strict metadata rendering. A fixed fractional-second instant and a synthetic blank-IP form-to-draft workflow passed; saved bytes stayed unchanged. Independent review found no actionable issue, and pinned-toolchain Rust completion gates passed. [Timestamp repair evidence](docs/evidence/tui-creation-timestamp.md) identifies the source and release artifact. This repairs M7 behavior without claiming new Alpine or VM validation; earlier artifact identities remain historical after this Rust change.
 - Bounded TUI maintenance (2026-10-26): repaired list arrows opening client details. Up/Down now only move the highlight; Enter opens details and Esc returns. Initial navigation follows the renderer's first-row highlight. Independent review closed NAV-001 with no remaining scoped findings; validation is recorded in [navigation repair evidence](docs/evidence/tui-navigation.md). This does not advance M9 or supply VM/Alpine acceptance evidence; prior artifact identities remain historical after this Rust change.
 - Milestones 1–8 are accepted; milestone 9 is retired by user direction and unaccepted. Its real systemd/D-Bus checks remain unverified and are not a prerequisite to M10.
@@ -3564,7 +3614,7 @@ Stop after this milestone; do not resume VM work, commit or deploy.
 
 - Milestone 8 delivered reviewed opt-in Alpine Testcontainers coverage for real IPv4 WireGuard peers, application lifecycle, saved/runtime separation, restoration, import/reissue, backup failures and the real Rustix reader. Host gates and three fresh real-container runs passed on one stable source fingerprint; M8-A1–A10 accepted. Real IPv6 behavior is unverified by user-authorized scope.
 - Milestone 9 is retired and unaccepted: the reviewed disposable VM preparation and guarded first start did not establish Debian/systemd acceptance. The exact VM was powered off after the user stopped work. M9.2–M9.3 were not started; M9-A1–A9 are unchecked.
-- Next action: scoped timestamp repair is complete; await user direction. Do not restart the VM, access production, commit, or deploy.
+- Next action: await user direction after M13. Do not restart the VM, access production, commit, or deploy.
 
 ## Plan maintenance
 

docs/evidence/milestone-13.md

@@ -0,0 +1,59 @@
+# Milestone 13 acceptance evidence: compact terminal QR disclosure
+
+Validated 2026-10-27T21:13:30+02:00 on the native
+`x86_64-unknown-linux-gnu` development host. This is synthetic terminal
+rendering evidence, not a manual scan or production integration result.
+
+## Behavior and review
+
+The QR renderer packs two vertical modules into one cell using space, `▀`,
+`▄`, and `█`, with explicit black foreground and white background. It preserves
+the encoded four-module quiet zone on all four edges and treats the absent
+partner of an odd final row as light. The QR is rendered in a separate,
+unwrapped region. The fit check accounts for its bordered area and actual
+wrapped delivery notice. A deterministic nonsecret 73-module fixture uses
+73 columns and 37 QR rows; with a one-row notice, the exact tested terminal
+layout is 75×44. Longer notices require more terminal height.
+
+When the complete QR does not fit, a compact fallback shows required and
+available dimensions, actual terminal dimensions, saved-file guidance, delivery
+status, and Esc. Tests inspect rendered buffers at 74×45, 34×12 and 20×8;
+resize redraws the held QR and Esc clears it. The compact notice preserves
+uncertain publication and destination-inspection guidance. File delivery,
+password authorization, and draft/saved/applied transitions were not modified.
+`QrCodeOutput` retains redacted Debug and the fixture matrix is nonsecret.
+
+An independent GPT-6-Luna/high reviewer examined the actual changes and
+closed M13-R1–R5 after targeted repairs: short fallback clipping, hidden
+saved/applied summary, incomplete quiet-zone edge coverage, inaccurate
+available-area dimensions, and misleading uncertain-delivery compaction. No
+actionable scoped findings remain.
+
+## Commands and source identity
+
+Pinned rustc/Cargo 1.97.1, rustfmt 1.9.0, and Clippy 0.1.97 were verified.
+The following commands ran from the repository root and exited 0:
+
+- `cargo test --locked tui::render::tests::`: 27 passed.
+- `cargo test --locked delivery::qr::tests::`: 2 passed.
+- `cargo fmt --all -- --check`.
+- `cargo clippy --locked --all-targets -- -D warnings`.
+- `cargo test --locked`: 352 passed, 3 explicitly ignored, 0 failed,
+  including 2 documentation tests.
+- `cargo build --locked --release`.
+- `git diff --check`.
+
+Base commit: `af2d061880a8532314f57d4f1ec6eb5265520091`. Dirty Rust inputs
+at validation were `src/tui/render.rs` and `src/delivery/qr.rs`; `PLANS.md`
+was also dirty with this milestone's execution record. SHA256 inputs:
+
+- `src/tui/render.rs`: `98ffa4d396194c201cfe20b6c6dcbd80b6689886fc625c8cb83efa6c12564e8a`
+- `src/delivery/qr.rs`: `1f2012c6d1583178ca964df1d444c8afeae35607dfafac05bc538911be480748`
+
+Native release artifact `target/release/wireguard-admin` SHA256:
+`0c2fc010138c7db27c3126d0eca6bd83da3be600c1c4e0f8c8beeef77d11e43a`.
+
+No physical terminal, phone/decoder scan, Alpine integration rerun, disposable
+systemd VM, or production operation was performed. The 80×24 size remains a
+dimensioned fallback for a 73-module QR. Previous integration artifacts do not
+identify this revision; M9 systemd acceptance remains retired and unverified.

src/delivery/qr.rs

@@ -90,6 +90,20 @@ pub(crate) fn synthetic_test_output() -> QrCodeOutput {
     encode_bytes(b"synthetic QR disclosure fixture").expect("synthetic QR payload encodes")
 }
 
+/// Deterministic, non-secret matrix for terminal layout and glyph tests.
+#[cfg(test)]
+pub(crate) fn synthetic_test_matrix(side: usize) -> QrCodeOutput {
+    let mut modules = Zeroizing::new(vec![0; side.saturating_mul(side)]);
+    for y in QUIET_ZONE..side.saturating_sub(QUIET_ZONE) {
+        for x in QUIET_ZONE..side.saturating_sub(QUIET_ZONE) {
+            if (x * 3 + y * 5) % 7 < 3 {
+                modules[y * side + x] = 1;
+            }
+        }
+    }
+    QrCodeOutput { side, modules }
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;

src/tui/render.rs

@@ -15,14 +15,13 @@ use super::state::{Screen, SessionView, UiState};
 
 pub fn draw(frame: &mut Frame<'_>, state: &UiState, forms: &FormController) {
     let area = frame.area();
+    if let Some(qr) = forms.qr_output() {
+        render_qr_screen(frame, area, state, qr, &forms.display_lines());
+        return;
+    }
     if area.width < 34 || area.height < 8 {
-        let message = if forms.qr_output().is_some() {
-            "Terminal too small for QR. Resize to at least 34 × 8, or use the saved client file; Esc clears the QR."
-        } else {
-            "Terminal too small. Resize to at least 34 × 8."
-        };
         frame.render_widget(
-            Paragraph::new(message)
+            Paragraph::new("Terminal too small. Resize to at least 34 × 8.")
                 .block(
                     Block::default()
                         .borders(Borders::ALL)
@@ -72,9 +71,6 @@ pub fn draw(frame: &mut Frame<'_>, state: &UiState, forms: &FormController) {
     );
 
     if forms.is_active() {
-        if let Some(qr) = forms.qr_output() {
-            render_qr_disclosure(frame, rows[1], qr, &forms.display_lines());
-        } else {
         let lines = if forms.is_draft_review() {
             draft_review_lines(state)
         } else {
@@ -93,7 +89,6 @@ pub fn draw(frame: &mut Frame<'_>, state: &UiState, forms: &FormController) {
             .scroll((state.scroll_offset.min(u16::MAX as usize) as u16, 0)),
             rows[1],
         );
-        }
     } else {
         match state.screen {
             Screen::Help => render_help(frame, rows[1]),
@@ -376,48 +371,314 @@ fn render_keyboard_panel(frame: &mut Frame<'_>, area: Rect, rows: &[Vec<Hint>],
     );
 }
 
-fn render_qr_disclosure(
+const QR_HEADER_HEIGHT: u16 = 1;
+const QR_FOOTER_HEIGHT: u16 = 3;
+
+#[derive(Clone, Copy, Debug, Eq, PartialEq)]
+struct QrFit {
+    terminal_width: usize,
+    terminal_height: usize,
+    available_width: usize,
+    available_height: usize,
+    required_width: usize,
+    required_height: usize,
+    fits: bool,
+}
+
+fn qr_fit(area: Rect, side: usize, notice_rows: usize) -> QrFit {
+    let terminal_width = area.width as usize;
+    let terminal_height = area.height as usize;
+    let available_width = area.width.saturating_sub(2) as usize;
+    let header_height = QR_HEADER_HEIGHT.min(area.height);
+    let footer_height = QR_FOOTER_HEIGHT.min(area.height.saturating_sub(header_height));
+    let body_height = area
+        .height
+        .saturating_sub(header_height)
+        .saturating_sub(footer_height);
+    let available_height = (body_height as usize).saturating_sub(2 + notice_rows);
+    let qr_rows = side.div_ceil(2);
+    let required_height =
+        QR_HEADER_HEIGHT as usize + QR_FOOTER_HEIGHT as usize + 2 + notice_rows + qr_rows;
+    let required_width = side + 2;
+    QrFit {
+        terminal_width,
+        terminal_height,
+        available_width,
+        available_height,
+        required_width,
+        required_height,
+        fits: side <= available_width && qr_rows <= available_height,
+    }
+}
+
+fn render_qr_screen(
     frame: &mut Frame<'_>,
-    area: ratatui::layout::Rect,
+    area: Rect,
+    state: &UiState,
     qr: &crate::delivery::QrCodeOutput,
     lines: &[String],
 ) {
-    let inner_width = area.width.saturating_sub(2) as usize;
-    let header_rows = lines.len();
-    let available_height = (area.height as usize).saturating_sub(2 + header_rows);
-    let side = qr.side();
-    let mut text = lines.iter().map(|line| safe_text(line)).collect::<Vec<_>>();
-    if !qr_fits(side, inner_width, available_height) {
-        text.push("QR is too large for this terminal. Resize to fit the complete code or use the saved client file.".to_owned());
-    } else {
-        for y in 0..side {
-            let mut row = String::with_capacity(side * 2);
-            for x in 0..side {
-                row.push_str(if qr.module(x, y).unwrap_or(false) {
-                    "██"
-                } else {
-                    "  "
-                });
+    let header_height = QR_HEADER_HEIGHT.min(area.height);
+    let footer_height = QR_FOOTER_HEIGHT.min(area.height.saturating_sub(header_height));
+    let body_height = area
+        .height
+        .saturating_sub(header_height)
+        .saturating_sub(footer_height);
+    let header = Rect {
+        height: header_height,
+        ..area
+    };
+    let body = Rect {
+        y: area.y.saturating_add(header_height),
+        height: body_height,
+        ..area
+    };
+    let footer = Rect {
+        y: body.y.saturating_add(body_height),
+        height: footer_height,
+        ..area
+    };
+    let status = state
+        .view
+        .as_ref()
+        .map_or("Loading saved state".to_owned(), state_summary);
+    let status = qr_state_summary(state, area.width as usize).unwrap_or(status);
+    frame.render_widget(Paragraph::new(status), header);
+
+    let inner_width = body.width.saturating_sub(2) as usize;
+    let notice_lines = lines
+        .iter()
+        .filter(|line| {
+            !line.starts_with("Client configuration QR disclosure (")
+                && line.as_str() != "Esc closes and clears the QR."
+        })
+        .cloned()
+        .collect::<Vec<_>>();
+    let notice_rows = wrap_notice_lines(&notice_lines, inner_width);
+    let fit = qr_fit(area, qr.side(), notice_rows.len());
+    if !fit.fits {
+        render_compact_qr_fallback(frame, area, header_height, qr.side(), &notice_lines, &fit);
+        return;
     }
-            text.push(row);
+    let mut content = notice_rows.into_iter().map(Line::from).collect::<Vec<_>>();
+    if fit.fits {
+        for y in (0..qr.side()).step_by(2) {
+            let mut spans = Vec::with_capacity(qr.side());
+            for x in 0..qr.side() {
+                let top = qr.module(x, y).unwrap_or(false);
+                let bottom = qr.module(x, y + 1).unwrap_or(false);
+                let (symbol, style) = qr_cell(top, bottom);
+                spans.push(Span::styled(symbol, style));
             }
+            content.push(Line::from(spans));
+        }
+    } else {
+        content.push(Line::from(format!(
+            "QR needs {}×{} cells; terminal is {}×{}; available QR area is {}×{}. Use the saved client file.",
+            qr.side(),
+            qr.side().div_ceil(2),
+            fit.terminal_width,
+            fit.terminal_height,
+            fit.available_width,
+            fit.available_height
+        )));
     }
     frame.render_widget(
-        Paragraph::new(Text::from(
-            text.into_iter().map(Line::from).collect::<Vec<_>>(),
-        ))
+        Paragraph::new(Text::from(content))
             .block(
                 Block::default()
                     .borders(Borders::ALL)
                     .title("Secret disclosure · Esc clears"),
             )
             .wrap(Wrap { trim: false }),
-        area,
+        body,
+    );
+    let mut hints = vec![vec![Hint {
+        key: "Esc",
+        action: "clear QR",
+        kind: HintKind::Destructive,
+    }]];
+    if footer.height == 0 {
+        hints.clear();
+    }
+    render_keyboard_panel(frame, footer, &hints, false);
+}
+
+fn qr_state_summary(state: &UiState, width: usize) -> Option<String> {
+    let view = state.view.as_ref()?;
+    let pending = view
+        .client_states
+        .values()
+        .filter(|row| row.draft != row.saved)
+        .count();
+    let saved = view
+        .client_states
+        .values()
+        .filter(|row| row.saved.is_some())
+        .count();
+    let expanded = state_summary(view);
+    if Span::raw(expanded.as_str()).width() <= width {
+        Some(expanded)
+    } else {
+        Some(format!(
+            "Draft {pending}  Saved {saved}  Applied {:?}",
+            view.applied
+        ))
+    }
+}
+
+fn render_compact_qr_fallback(
+    frame: &mut Frame<'_>,
+    area: Rect,
+    header_height: u16,
+    side: usize,
+    notice_lines: &[String],
+    fit: &QrFit,
+) {
+    let body = Rect {
+        y: area.y.saturating_add(header_height),
+        height: area.height.saturating_sub(header_height),
+        ..area
+    };
+    let width = body.width as usize;
+    let required_line = format!("QR needs {}×{}", side, side.div_ceil(2));
+    let terminal_line = format!("Terminal {}×{}", fit.terminal_width, fit.terminal_height);
+    let file_line = if width >= 22 {
+        "Use saved client file."
+    } else {
+        "Use saved file."
+    };
+    let fixed_lines = [
+        required_line,
+        terminal_line,
+        "Available QR".to_owned(),
+        file_line.to_owned(),
+        "Esc clears QR.".to_owned(),
+    ];
+    let fixed_rows = fixed_lines
+        .iter()
+        .map(|line| wrap_notice_lines(std::slice::from_ref(line), width).len())
+        .sum::<usize>();
+    let max_notice_rows = (body.height as usize).saturating_sub(fixed_rows);
+    let raw_notice = notice_lines.join(" ");
+    let mut notice_rows = wrap_notice_lines(notice_lines, width);
+    if notice_rows.len() > max_notice_rows {
+        let compact_notice = compact_delivery_notice(&raw_notice);
+        notice_rows = wrap_notice_lines(&[compact_notice], width);
+    }
+    if notice_rows.len() > max_notice_rows {
+        notice_rows.truncate(max_notice_rows);
+        if let Some(last) = notice_rows.last_mut() {
+            *last = truncate_display_line(last, width.saturating_sub(1));
+            last.push('…');
+        }
+    }
+    // Report the same bordered QR area used by the fit decision, even though
+    // this fallback text itself uses the full unbordered body.
+    let available_width = fit.available_width;
+    let available_height = fit.available_height;
+    let mut lines = notice_rows.into_iter().map(Line::from).collect::<Vec<_>>();
+    for (index, line) in fixed_lines.into_iter().enumerate() {
+        let line = if index == 2 {
+            format!("Available QR: {available_width}×{available_height}")
+        } else {
+            line
+        };
+        lines.extend(
+            wrap_notice_lines(&[line], width)
+                .into_iter()
+                .map(Line::from),
+        );
+    }
+    frame.render_widget(
+        Paragraph::new(Text::from(lines)).wrap(Wrap { trim: false }),
+        body,
     );
 }
 
-fn qr_fits(side: usize, inner_width: usize, available_height: usize) -> bool {
-    side.saturating_mul(2) <= inner_width && side <= available_height
+fn compact_delivery_notice(notice: &str) -> String {
+    if notice.contains("may have been published") || notice.contains("bookkeeping is uncertain") {
+        "Delivery uncertain; inspect destination.".to_owned()
+    } else if notice.contains("not verified as active") || notice.contains("not yet active") {
+        "File delivered; access unverified.".to_owned()
+    } else if notice.contains("file delivered") || notice.contains("reissue completed") {
+        "Client file delivery completed.".to_owned()
+    } else {
+        notice.to_owned()
+    }
+}
+
+fn truncate_display_line(line: &str, max_width: usize) -> String {
+    let mut result = String::new();
+    let mut used = 0usize;
+    for character in line.chars() {
+        let character_width = Span::raw(character.to_string()).width();
+        if used.saturating_add(character_width) > max_width {
+            break;
+        }
+        result.push(character);
+        used += character_width;
+    }
+    result
+}
+
+fn wrap_notice_lines(lines: &[String], width: usize) -> Vec<String> {
+    let width = width.max(1);
+    let mut wrapped = Vec::new();
+    for line in lines {
+        let safe = safe_text(line);
+        let mut current = String::new();
+        let mut used = 0usize;
+        for word in safe.split_whitespace() {
+            let word_width = Span::raw(word).width();
+            let gap = usize::from(!current.is_empty());
+            if used + gap + word_width <= width {
+                if gap != 0 {
+                    current.push(' ');
+                    used += 1;
+                }
+                current.push_str(word);
+                used += word_width;
+            } else if word_width <= width {
+                if !current.is_empty() {
+                    wrapped.push(std::mem::take(&mut current));
+                }
+                current.push_str(word);
+                used = word_width;
+            } else {
+                if !current.is_empty() {
+                    wrapped.push(std::mem::take(&mut current));
+                }
+                let mut chunk = String::new();
+                let mut chunk_width = 0;
+                for character in word.chars() {
+                    let char_width = Span::raw(character.to_string()).width();
+                    if chunk_width + char_width > width {
+                        wrapped.push(std::mem::take(&mut chunk));
+                        chunk_width = 0;
+                    }
+                    chunk.push(character);
+                    chunk_width += char_width;
+                }
+                current = chunk;
+                used = chunk_width;
+            }
+        }
+        if !current.is_empty() || safe.is_empty() {
+            wrapped.push(current);
+        }
+    }
+    wrapped
+}
+
+fn qr_cell(top: bool, bottom: bool) -> (&'static str, Style) {
+    let symbol = match (top, bottom) {
+        (false, false) => " ",
+        (true, false) => "▀",
+        (false, true) => "▄",
+        (true, true) => "█",
+    };
+    (symbol, Style::default().fg(Color::Black).bg(Color::White))
 }
 
 fn draft_review_lines(state: &UiState) -> Vec<String> {
@@ -1438,9 +1699,9 @@ mod tests {
             .draw(|frame| draw(frame, &UiState::default(), &forms))
             .unwrap();
         let text = rendered_text(&terminal);
-        assert!(text.contains("Secret disclosure"));
-        assert!(text.contains("Esc clears QR") || text.contains("Esc clear QR"));
-        assert!(text.contains("clear QR"));
+        assert!(text.contains("saved client file"));
+        assert!(text.contains("Esc clears QR"));
+        assert!(text.contains("clears QR"));
         assert!(!text.contains("synthetic QR disclosure fixture"));
 
         let mut compact = Terminal::new(TestBackend::new(34, 8)).unwrap();
@@ -1448,10 +1709,229 @@ mod tests {
             .draw(|frame| draw(frame, &UiState::default(), &forms))
             .unwrap();
         let compact_text = rendered_text(&compact);
-        assert!(compact_text.contains("clear QR"));
+        assert!(compact_text.contains("Esc clears QR."));
         assert!(!compact_text.contains("synthetic QR disclosure fixture"));
     }
 
+    #[test]
+    fn compact_qr_cell_covers_every_module_pair_with_explicit_colors() {
+        for (top, bottom, expected) in [
+            (false, false, " "),
+            (true, false, "▀"),
+            (false, true, "▄"),
+            (true, true, "█"),
+        ] {
+            let (symbol, style) = qr_cell(top, bottom);
+            assert_eq!(symbol, expected);
+            assert_eq!(style.fg, Some(Color::Black));
+            assert_eq!(style.bg, Some(Color::White));
+        }
+        assert_eq!(qr_cell(true, false).0, "▀");
+        assert_eq!(qr_cell(false, false).0, " ");
+    }
+
+    #[test]
+    fn seventy_three_module_qr_fits_exact_bordered_layout_and_keeps_quiet_zone() {
+        let fixture = crate::delivery::qr::synthetic_test_matrix(73);
+        let exact = Rect::new(0, 0, 75, 44);
+        let fit = qr_fit(exact, fixture.side(), 1);
+        assert_eq!(fit.required_width, 75);
+        assert_eq!(fit.required_height, 44);
+        assert_eq!((fit.available_width, fit.available_height), (73, 37));
+        assert!(fit.fits);
+
+        let mut forms = FormController::default();
+        forms.open_disclosure(fixture, "Activation pending until restart.".to_owned());
+        let mut terminal = Terminal::new(TestBackend::new(75, 44)).unwrap();
+        terminal
+            .draw(|frame| draw(frame, &UiState::default(), &forms))
+            .unwrap();
+        let buffer = terminal.backend().buffer();
+        let assert_light_module = |x: usize, y: usize| {
+            let terminal_x = (1 + x) as u16;
+            let terminal_y = (3 + y / 2) as u16;
+            let cell = &buffer[(terminal_x, terminal_y)];
+            let (top, bottom) = match cell.symbol() {
+                " " => (false, false),
+                "▀" => (true, false),
+                "▄" => (false, true),
+                "█" => (true, true),
+                other => panic!("unexpected compact QR cell {other:?}"),
+            };
+            assert_eq!(cell.fg, Color::Black);
+            assert_eq!(cell.bg, Color::White);
+            assert!(!if y.is_multiple_of(2) { top } else { bottom });
+        };
+        for edge in 0..4 {
+            for coordinate in 0..73 {
+                assert_light_module(coordinate, edge);
+                assert_light_module(coordinate, 72 - edge);
+                assert_light_module(edge, coordinate);
+                assert_light_module(72 - edge, coordinate);
+            }
+        }
+        // The odd final module row shares a cell with an absent, light row.
+        let odd_last_row = &buffer[(73, 39)];
+        assert_eq!(odd_last_row.symbol(), " ");
+        assert_eq!(odd_last_row.fg, Color::Black);
+        assert_eq!(odd_last_row.bg, Color::White);
+        assert!(rendered_text(&terminal).contains("Esc clear QR"));
+    }
+
+    #[test]
+    fn narrow_notice_wraps_and_resize_redraws_the_same_authorized_matrix() {
+        let notice = "Access remains inactive until the saved configuration is applied by an explicit restart.";
+        let wrapped = wrap_notice_lines(&[notice.to_owned()], 18);
+        assert!(wrapped.len() > 1);
+        assert!(
+            wrapped
+                .iter()
+                .all(|line| Span::raw(line.as_str()).width() <= 18)
+        );
+
+        let fixture = crate::delivery::qr::synthetic_test_matrix(73);
+        let mut forms = FormController::default();
+        forms.open_disclosure(fixture, notice.to_owned());
+        let side_before = forms.qr_output().map(|matrix| matrix.side());
+
+        let mut narrow = Terminal::new(TestBackend::new(74, 45)).unwrap();
+        narrow
+            .draw(|frame| draw(frame, &UiState::default(), &forms))
+            .unwrap();
+        let fallback = rendered_text(&narrow);
+        assert!(fallback.contains("QR needs 73×37"));
+        assert!(fallback.contains("Terminal 74×45"));
+        assert!(fallback.contains("Available QR:"));
+        assert!(fallback.contains("Available QR: 72×37"));
+        assert!(fallback.contains("saved client file"));
+        assert!(fallback.contains("clears QR"));
+
+        let mut resized = Terminal::new(TestBackend::new(75, 60)).unwrap();
+        resized
+            .draw(|frame| draw(frame, &UiState::default(), &forms))
+            .unwrap();
+        assert!(rendered_text(&resized).contains("▀"));
+        assert_eq!(forms.qr_output().map(|matrix| matrix.side()), side_before);
+
+        assert!(matches!(
+            forms.handle_key(crossterm::event::KeyCode::Esc),
+            super::super::forms::FormAction::Cancel
+        ));
+        assert!(forms.qr_output().is_none());
+    }
+
+    #[test]
+    fn short_qr_fallback_keeps_dimensions_delivery_status_file_and_esc_visible() {
+        let mut forms = FormController::default();
+        forms.open_disclosure(
+            crate::delivery::qr::synthetic_test_matrix(73),
+            "Activation pending until restart.".to_owned(),
+        );
+        let mut terminal = Terminal::new(TestBackend::new(34, 8)).unwrap();
+        terminal
+            .draw(|frame| draw(frame, &UiState::default(), &forms))
+            .unwrap();
+
+        let buffer = terminal.backend().buffer();
+        let text = rendered_text(&terminal);
+        assert!(text.contains("QR needs 73×37"));
+        assert!(text.contains("Terminal 34×8"));
+        assert!(text.contains("Available QR: 32×0"));
+        assert!(text.contains("Activation pending until restart."));
+        assert!(text.contains("Use saved client file."));
+        assert!(text.contains("Esc clears QR."));
+        assert!(buffer[(0, 0)].symbol().starts_with('L'));
+    }
+
+    #[test]
+    fn qr_fallback_reserves_guidance_before_delivery_notice_and_redraws_on_resize() {
+        let notice = "Client file delivered. Access is not verified as active yet. QR result: Ok. Password-authorized file reissue completed. Access is not verified as active yet. QR result: Ok.";
+        let mut forms = FormController::default();
+        forms.open_disclosure(
+            crate::delivery::qr::synthetic_test_matrix(73),
+            notice.to_owned(),
+        );
+        let state = UiState {
+            view: Some(empty_view()),
+            ..UiState::default()
+        };
+
+        let mut medium = Terminal::new(TestBackend::new(34, 12)).unwrap();
+        medium.draw(|frame| draw(frame, &state, &forms)).unwrap();
+        let medium_text = rendered_text(&medium);
+        assert!(medium_text.contains("QR needs 73×37"));
+        assert!(medium_text.contains("Terminal 34×12"));
+        assert!(medium_text.contains("Available QR: 32×0"));
+        assert!(medium_text.contains("Use saved client file."));
+        assert!(medium_text.contains("Esc clears QR."));
+        assert!(medium_text.contains("not verified as active"));
+        let status = (0..medium.backend().buffer().area.width)
+            .map(|x| medium.backend().buffer()[(x, 0)].symbol())
+            .collect::<String>();
+        assert!(status.contains("Saved 0"));
+        assert!(status.contains("Applied Unknown"));
+
+        let mut narrow = Terminal::new(TestBackend::new(20, 8)).unwrap();
+        narrow.draw(|frame| draw(frame, &state, &forms)).unwrap();
+        let narrow_text = rendered_text(&narrow);
+        assert!(narrow_text.contains("QR needs 73×37"));
+        assert!(narrow_text.contains("Terminal 20×8"));
+        assert!(narrow_text.contains("Available QR: 18×0"));
+        assert!(narrow_text.contains("Use saved file."));
+        assert!(narrow_text.contains("Esc clears QR."));
+        assert!(narrow_text.contains("access unverified"));
+
+        let mut resized = Terminal::new(TestBackend::new(75, 60)).unwrap();
+        resized.draw(|frame| draw(frame, &state, &forms)).unwrap();
+        assert!(rendered_text(&resized).contains("▀"));
+    }
+
+    #[test]
+    fn uncertain_first_delivery_notice_keeps_inspection_guidance_in_short_fallback() {
+        let notice = "Client file may have been published but delivery bookkeeping is uncertain. Inspect the destination; fresh password authorization is required. Access is not verified as active yet. QR result: Encoded.";
+        let mut forms = FormController::default();
+        forms.open_disclosure(
+            crate::delivery::qr::synthetic_test_matrix(73),
+            notice.to_owned(),
+        );
+        let mut terminal = Terminal::new(TestBackend::new(20, 8)).unwrap();
+        terminal
+            .draw(|frame| draw(frame, &UiState::default(), &forms))
+            .unwrap();
+
+        let text = rendered_text(&terminal);
+        assert!(text.contains("Delivery uncertain;"));
+        assert!(text.contains("inspect destination."));
+        assert!(!text.contains("File delivered; access unverified."));
+        assert!(text.contains("QR needs 73×37"));
+        assert!(text.contains("Available QR: 18×0"));
+        assert!(text.contains("Use saved file."));
+        assert!(text.contains("Esc clears QR."));
+    }
+
+    #[test]
+    fn qr_screen_keeps_saved_and_applied_summary_visible_in_buffer() {
+        let mut forms = FormController::default();
+        forms.open_disclosure(
+            crate::delivery::qr::synthetic_test_output(),
+            "Activation pending".to_owned(),
+        );
+        let state = UiState {
+            view: Some(empty_view()),
+            ..UiState::default()
+        };
+        let mut terminal = Terminal::new(TestBackend::new(34, 8)).unwrap();
+        terminal.draw(|frame| draw(frame, &state, &forms)).unwrap();
+
+        let buffer = terminal.backend().buffer();
+        let status_row = (0..buffer.area.width)
+            .map(|x| buffer[(x, 0)].symbol())
+            .collect::<String>();
+        assert!(status_row.contains("Draft 0"));
+        assert!(status_row.contains("Saved 0"));
+        assert!(status_row.contains("Applied Unknown"));
+    }
+
     #[test]
     fn below_minimum_terminal_shows_resize_message_without_drawing_footer() {
         let mut terminal = Terminal::new(TestBackend::new(33, 7)).unwrap();
@@ -1582,10 +2062,10 @@ mod tests {
     }
 
     #[test]
-    fn qr_fit_requires_the_complete_quiet_zone_in_both_dimensions() {
-        assert!(qr_fits(25, 50, 25));
-        assert!(!qr_fits(25, 49, 25));
-        assert!(!qr_fits(25, 50, 24));
+    fn qr_fit_requires_complete_compact_matrix_inside_bordered_layout() {
+        assert!(qr_fit(Rect::new(0, 0, 27, 20), 25, 0).fits);
+        assert!(!qr_fit(Rect::new(0, 0, 26, 20), 25, 0).fits);
+        assert!(!qr_fit(Rect::new(0, 0, 27, 18), 25, 0).fits);
     }
 
     #[test]