Combine source navigation and alias rename with canvas ownership guards

crates/oa-desktop/src/guide.rs

@@ -805,7 +805,7 @@ fn article(topic: Topic) -> Article {
             const {
                 Article {
                     summary: "The text editor and graphical forms edit the same model. Source projects preserve file organization and comments for human review, automation and version control.",
-                    keywords: "text textual source language syntax highlighting lint parser git aliases uuid identity rename diff merge restructuredtext spec canonical parity",
+                    keywords: "text textual source language syntax highlighting lint parser git aliases uuid identity rename F2 preview diff merge restructuredtext spec canonical parity definition references lexical navigation F12 back",
                     sections: &[
                         walkthrough(
                             "Edit and review source",
@@ -818,10 +818,31 @@ fn article(topic: Topic) -> Article {
                                 "Save all writes the entry and its included UTF-8 files. Review the Git diff before committing, including relationships, traces and diagram changes that belong to the same engineering edit.",
                             ],
                         ),
+                        explain(
+                            "Follow definitions and lexical references",
+                            "Place the caret on a declaration alias or an @reference. Choose Definition (F12) to locate its declaration, or References (Shift+F12) to list lexical uses. Choose a row when a definition is ambiguous, draft or detached. Lexical uses exclude comments and strings; they do not establish typed relationships or resolve an ambiguous alias to one declaration. Back (Alt+Left) returns to the previous source location; if that draft changed, it restores the current cursor instead of an obsolete selection. These shortcuts work while the source editor has focus; the Text toolbar also offers the actions.",
+                        ),
+                        explain(
+                            "Read the navigation scope",
+                            "Queries inspect bounded snapshots of currently loaded drafts, without applying them or loading missing included files. The panel identifies partial scope, draft evidence, detached or unverified files, and alias or ID collisions. Counts show total, displayed and omitted rows. A missing result in partial scope does not establish that the whole project has no match. If sources change, stale rows are disabled; run Definition or References again. Row locations use one-based lines and UTF-8 byte columns. Navigation preserves your source drafts and the accepted model.",
+                        ),
+                        explain(
+                            "Find the record in diagrams",
+                            "Choose Show in diagrams from the Text toolbar on a unique verified alias in clean sources, or from the chosen model-tree record's context menu. Choose a diagram destination, then an exact representation. Results follow visible projection: ports, state rows, repeated caller tiles and their drawn sequence links remain distinct. Hidden tiles and nested links that are not drawn are excluded. A direct allocation can be represented by visible grouping; aggregate summaries do not invent allocation relations. A visual marker locates the port, row or grouped work while keeping the queried semantic record selected for model actions. Moving the camera preserves that marker. Finish pending edits first; navigation preserves accepted geometry, sources and history.",
+                        ),
                         explain(
                             "Names, aliases and IDs serve different purposes",
                             "The displayed name is engineering prose. A stable @alias is the readable source reference and need not change when the name changes. UUID identity distinguishes the persistent record. Preserve IDs when revising the same engineering object; changing identity is a deliberate operation that affects references.",
                         ),
+                        walkthrough(
+                            "Rename a source alias",
+                            &[
+                                "Place the caret on a declaration alias or live @reference, then choose Rename alias or press F2 in the source editor. First finish or revert pending source, property and behavior drafts; close or reattach any extra loaded detached files. Accepted edits do not need to be saved first.",
+                                "Edit Source alias and choose Preview (Enter also previews). Pasting line breaks, tabs or other control characters is rejected without changing the field; choose Preview again after correcting the paste. Review the changed files, hunks and lines; long lines have additional segments. The engineering name and UUID stay unchanged. Comments and quoted prose keep their original spelling. This preview covers the rename; a later Save can include earlier accepted edits too.",
+                                "Choose Rename alias to accept the complete preview, or Cancel/Escape to leave everything unchanged. An invalid, unchanged, stale or oversized preview cannot be confirmed. After editing the replacement, choose Preview again. If the source context changes, close the form and invoke Rename again on the current alias.",
+                                "Use Undo rename immediately, or the model Undo/Redo controls, to restore the complete source/model snapshot. Ctrl+Z in Text still undoes source drafting. Save all and reopen use the normal project workflow; an unconfirmed preview is not saved.",
+                            ],
+                        ),
                         example(
                             "Readable references",
                             "For example, renaming an activity does not require renaming @assess_incident. A related record can still refer to that alias.",