ui: review candidate physical material cards without assignment (#1344)

Adds a read-only review window to Validate Physical Material Data: paste a schema-1 card, see its known properties in SI units, unknown ones marked, with stated conditions and source claims. Nothing is assigned or saved.

Co-authored-by: 0xlillith <[email protected]>

docs/physical-material-cards.md

@@ -13,6 +13,26 @@ advanced rendering. The result reports `analysis_solver_available: false` and
 
 ## Contract (standalone card schema 1)
 
+### Candidate review window
+
+Search for **Validate Physical Material Data** in the command palette (or use
+`ui.start` with `material.properties.validate`) to open the candidate reviewer.
+Paste a schema-1 card object and choose **Review card**. The existing engine
+validator checks it; the window shows known properties in SI units, unknown
+properties, per-property conditions and source claims as inert text. Material-local
+axes do not assign a frame to a body. Isotropic G/K come from the engine report.
+
+Editing the input clears the previous review. Invalid input shows its refusal
+without retaining a stale valid result. Input is capped at 262,144 characters and
+256 KiB before JSON parsing; the validator's tighter structural and text budgets
+still apply. The window does not read files, fetch references, assign properties,
+replace density, modify history or save the candidate. Close discards it. Calling
+the engine's JSON command still returns its report without opening a dialog.
+
+This main-based review unit is independent of assigned-card persistence, local
+file import and the design-owned inspector follow-up in #1094. No dataset or
+rendering capability is supplied by reviewing a candidate.
+
 A card has `schema_version: 1`, `designation`, `family` (`wood`, `polymer`, `glass`,
 `metal`, `other`), `sources` and `properties`. Source IDs are exact, case-sensitive
 local references. Each source has `id`, `title`, `kind` (`user_supplied`,