fix(vscode): draw a table rendering as a table

[devin-ai-integration]

What and why

A table-kind view (render asElementTable) or the #table pseudo-view showed up in the diagram panel as its raw Markdown source in a <pre> — HTML comment, pipe characters and all — so it looked broken even though the server rendered it fine.

The panel now draws the rendering's structured rows/columns (which opensysml/render already returns alongside the Markdown artifact) as a real HTML table, and a row whose element the server traced to a declaration opens that declaration in the editor when clicked, the way a node click does. The cursor highlight works the other way too: a row whose origin range holds the cursor is marked selected.

webview/table.ts        tableOf(result): HTMLElement          // thead from columns, one tr per row, textContent cells
webview/diagram.ts      draw(): non-mermaid → tableOf(result)
                        click on tr.located → post { type: "revealRow", row, drawn }
                        highlight("row:<i>") marks that tr
protocol.ts             FromWebview += { type: "revealRow"; row; drawn }
edits.ts                Rendering.rows?: RenderRow[]
diagram.ts (host)       revealSource/revealRow → shared revealOrigin(origin)
                        highlightAt falls back to the row containing the cursor

Table styling uses VS Code theme variables, with B&W variants under the pilot look.

How it was verified

• npm --prefix editors/vscode run typecheck, npm --prefix editors/vscode test (182 pass; 4 new tests in webview/table.test.ts: headers + located rows + literal-text cells, ragged-row padding, empty state, absent columns).
• python3 scripts/changelog.py check, make vscode-package.
• By hand in VS Code against bin/sysml-lsp: #table pseudo-view and a declared partsTable view render as tables; clicking the w row selects w in the source; moving the cursor onto Car highlights its row.

Checklist

• make test and make lint pass locally
• Tests added or updated for the change
• Documentation extended where it already covers the surface (see CONTRIBUTING.md)
• Changelog entry added as changes/unreleased/<slug>.<section>.md, not as an edit to CHANGELOG.md
• baselines regenerated and make docs-counts run if a gate count moved (compliance rows need nothing: the census is counted at docs build)
• No internal work-item labels (waves, slices, F4, K5) in the body, docs, or changelog

[devin-ai-integration]

I'll fix CI failures and address comments from users with write access. I'll skip comments containing "(aside)".

• Disable automatic comment, CI, and merge conflict monitoring

[devin-ai-integration]

✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no bugs or issues to report.

[devin-ai-integration]

Desktop verification on e15cc12 with a freshly packaged and installed VSIX in VS Code.

• #table renders an HTML table with Element / Kind / Type / Declared in headers and the expected rows; no raw Markdown.
• The declared partsTable view renders its three exposed rows.
• Clicking w selects exactly its identifier in the source; cursor on Car highlights its row, cursor on the nested w highlights only w.
• Pilot style stays readable; an unsaved part def Engine; redraws the table at once; an empty exposure shows "No elements to list."
• Regression: the tree still draws, and a node click still reveals its declaration.

Pseudo-view table	Row click selects the source