feat: secrets masqués — couverture universelle clés API/mots de passe + clic pour copier (#188)

backend/render.py

@@ -21,7 +21,7 @@ import mistune
 
 from backend.image_processor import preprocess_images
 from backend.indexer import find_file_in_index, get_vault_data
-from backend.secret_redactor import redact_file_content
+from backend.secret_redactor import redact_with_placeholders, restore_masks
 from backend.services.sanitizer import sanitize_html
 
 
@@ -166,7 +166,13 @@ def _normalize_line_breaks(text: str) -> str:
     return "".join(parts)
 
 
-def _render_markdown(raw_md: str, vault_name: str, current_file_path: Path | None = None) -> str:
+def _render_markdown(
+    raw_md: str,
+    vault_name: str,
+    current_file_path: Path | None = None,
+    *,
+    click_to_copy: bool = False,
+) -> str:
     """Render a markdown string to HTML with wikilink and image support.
 
     Uses the cached singleton mistune renderer for performance.
@@ -175,6 +181,10 @@ def _render_markdown(raw_md: str, vault_name: str, current_file_path: Path | Non
         raw_md: Raw markdown text (frontmatter already stripped).
         vault_name: Current vault for wikilink resolution context.
         current_file_path: Absolute path to the current markdown file.
+        click_to_copy: Restore masked secrets as clickable badges carrying
+            the real value (authenticated app preview, feature #188).
+            Public shares and PDF exports keep plain labels: the secret
+            never reaches their HTML.
 
     Returns:
         HTML string.
@@ -184,8 +194,13 @@ def _render_markdown(raw_md: str, vault_name: str, current_file_path: Path | Non
     vault_root = Path(vault_data["path"]) if vault_data else None
     attachments_path = vault_data.get("config", {}).get("attachmentsPath") if vault_data else None
 
-    # Redact secrets before rendering (P0 security)
-    raw_md = redact_file_content(raw_md, str(current_file_path) if current_file_path else "")
+    # Redact secrets before rendering (P0 security). Placeholders survive
+    # the markdown conversion (fenced code blocks included) and are turned
+    # back into visible masks — clickable badges when click_to_copy — right
+    # after the HTML is produced (feature #188).
+    raw_md, secret_entries = redact_with_placeholders(
+        raw_md, str(current_file_path) if current_file_path else ""
+    )
 
     # Preprocess images first
     if vault_root:
@@ -201,6 +216,10 @@ def _render_markdown(raw_md: str, vault_name: str, current_file_path: Path | Non
     # renderers HTML renvoient toujours `str` à l'exécution).
     rendered = cast(str, _markdown_renderer(converted))
 
+    # Restore secret masks (plain labels, or clickable badges carrying the
+    # real value on the authenticated app preview — feature #188).
+    rendered = restore_masks(rendered, secret_entries, click_to_copy=click_to_copy)
+
     # Add heading IDs for TOC navigation
     rendered = _add_heading_ids(rendered)