docs(context): add ingest identifier verification protocol

packages/context/src/ingest/tools/emit-unmapped-fallback.tool.ts

@@ -64,7 +64,7 @@ export function createEmitUnmappedFallbackTool(deps: EmitUnmappedFallbackDeps) {
       tableRef: z
         .string()
         .optional()
-        .describe('The fully-qualified table or source reference that triggered the fallback (e.g. "orbit_analytics.customer"). Used to generate canonical detail text.'),
+        .describe('The fully-qualified table or source reference that triggered the fallback (e.g. "<schema>.<table>"). Used to generate canonical detail text.'),
       clarification: z
         .string()
         .optional()

packages/context/src/sl/tools/sl-warehouse-validation.ts

@@ -90,7 +90,7 @@ export async function validateSingleSource(
           `writing it as-is drops the manifest's columns and joins. ` +
           `Remove "sql:", "table:", "grain:", "columns:", and "joins:" and keep only ` +
           `"name:" plus "measures:"/"segments:"/"description:" to write an overlay ` +
-          `that inherits the manifest schema. Call sl_describe_table to see it first.`,
+          `that inherits the manifest schema. Call sl_read_source to inspect the existing source first.`,
       );
       return { errors, warnings };
     }