test: split cli tests from source tree (#216)

* feat(cli): define full warehouse dialect contract

* test(cli): keep dialect edge tests focused

* fix(cli): stabilize dialect contract foundation

* refactor(connectors): own read-only query preparation

* refactor(connectors): resolve dialects through registry

* refactor(connectors): keep concrete dialect classes internal

* chore(workspace): enforce dialect import boundary

* refactor(cli): resolve relationship dialect at scan boundary

* refactor(cli): use dialect display parsing for entity details

* refactor(cli): use dialect display parsing for warehouse catalog

* refactor(cli): use dialect SQL in relationship workflows

* test(cli): verify solid dialect scan workflow closure

* test: split cli tests from source tree

* refactor(cli): standardize BigQuery scope listing

* feat(sqlite): implement connector scope listing

* test(connectors): cover required table listing

* feat(cli): add warehouse driver registry

* refactor(setup): route scope discovery through driver registry

* refactor(cli): route local query execution through driver registry

* refactor(historic-sql): route dialect support through driver registry

* refactor(cli): test warehouse connections through driver registry

* fix(cli): close driver registry type export gaps

* Improve setup daemon diagnostics

* refactor(setup): centralize rail-prefixed diagnostics + query-history fallback

Extract errorMessage, writePrefixedLines, and flushPrefixedBufferedCommandOutput
into clack.ts so the setup wizard, managed daemons, and embedding/agent steps
share one rail-formatted writer. setup-databases.ts also adds a
"disable query history and retry" option when the schema-context build fails
and query history is the likely culprit, surfaced via a new
failed-query-history-unavailable status.

* fix(cli): carry catalog through the picker so BigQuery/Snowflake/SQL Server scope filters match

The setup picker's KtxTableListEntry was a 2-level { schema, name }, so
qualifiedTableId always wrote db.name into enabled_tables. When BigQuery,
Snowflake, or SQL Server later ran fast ingest, their introspect step filtered
the scope set with scopedTableNames(scope, { catalog: projectId|database, db })
— catalog was non-null on the introspect side but null in the scope refs, so
every entry was rejected, the live-database adapter staged zero table files,
and detect() failed with 'Adapter "live-database" did not recognize fetched
source output'.

Align the picker boundary with the canonical 3-level KtxTableRef:

- Add catalog: string | null to KtxTableListEntry.
- BigQuery/Snowflake/SQL Server listTables populate catalog from the
  resolved projectId / database; Postgres/MySQL/ClickHouse/SQLite set null.
- qualifiedTableId emits catalog.schema.name when catalog is non-null
  (resolveEnabledTables already accepts the 3-part shape) and
  schemasFromEnabledTables now goes through parseDottedTableEntry so it
  recovers the schema correctly from both 2-part and 3-part entries.
- Export parseDottedTableEntry from enabled-tables.ts (@internal) for picker
  reuse.

Update listTables expectations in all seven connector tests and the setup /
picker test fixtures. Add a picker regression test that covers the
catalog-bearing round-trip (save + refine).

* fix(cli): allow debug telemetry under opt-out env

packages/cli/src/context/connections/dialect-helpers.ts

@@ -0,0 +1,87 @@
+import type { KtxTableRef } from '../scan/types.js';
+
+export type KtxDialectIdentifierShape = 'ansi' | 'sqlite' | 'three-part';
+
+export type KtxDialectTableRef = Pick<KtxTableRef, 'name'> & Partial<Pick<KtxTableRef, 'catalog' | 'db'>>;
+
+export function safeSqlLimit(limit: number): number {
+  return Math.max(1, Math.floor(limit));
+}
+
+function safeSqlOffset(offset: number | undefined): number | null {
+  if (offset === undefined) {
+    return null;
+  }
+  const normalized = Math.floor(offset);
+  return normalized > 0 ? normalized : null;
+}
+
+function cleanIdentifierPart(part: string): string {
+  return part.trim().replace(/^["'`\[]|["'`\]]$/g, '');
+}
+
+function splitDisplay(display: string): string[] {
+  return display.trim().split('.').map(cleanIdentifierPart).filter(Boolean);
+}
+
+function tableParts(table: KtxDialectTableRef, shape: KtxDialectIdentifierShape): string[] {
+  if (shape === 'sqlite') {
+    return [table.name];
+  }
+  return [table.catalog ?? null, table.db ?? null, table.name].filter((part): part is string => Boolean(part));
+}
+
+function acceptedDisplayPartCounts(shape: KtxDialectIdentifierShape): readonly number[] {
+  if (shape === 'sqlite') {
+    return [1];
+  }
+  if (shape === 'three-part') {
+    return [3];
+  }
+  return [2, 3];
+}
+
+export function formatDialectTableName(
+  table: KtxDialectTableRef,
+  quoteIdentifier: (identifier: string) => string,
+  shape: KtxDialectIdentifierShape,
+): string {
+  return tableParts(table, shape).map(quoteIdentifier).join('.');
+}
+
+export function formatDialectDisplayRef(table: KtxDialectTableRef, shape: KtxDialectIdentifierShape): string {
+  return tableParts(table, shape).join('.');
+}
+
+export function parseDialectDisplayRef(display: string, shape: KtxDialectIdentifierShape): KtxTableRef | null {
+  const parts = splitDisplay(display);
+  if (!acceptedDisplayPartCounts(shape).includes(parts.length)) {
+    return null;
+  }
+  if (parts.length === 1) {
+    return { catalog: null, db: null, name: parts[0]! };
+  }
+  if (parts.length === 2) {
+    return { catalog: null, db: parts[0]!, name: parts[1]! };
+  }
+  if (parts.length === 3) {
+    return { catalog: parts[0]!, db: parts[1]!, name: parts[2]! };
+  }
+  return null;
+}
+
+export function columnDisplayPartCount(shape: KtxDialectIdentifierShape): 1 | 2 | 3 {
+  if (shape === 'sqlite') {
+    return 1;
+  }
+  if (shape === 'three-part') {
+    return 3;
+  }
+  return 2;
+}
+
+export function limitOffsetClause(limit: number, offset?: number): string {
+  const safeLimit = safeSqlLimit(limit);
+  const safeOffset = safeSqlOffset(offset);
+  return safeOffset === null ? `LIMIT ${safeLimit}` : `LIMIT ${safeLimit} OFFSET ${safeOffset}`;
+}