diff --git a/CLAUDE.md b/.claude/CLAUDE.md
similarity index 100%
rename from CLAUDE.md
rename to .claude/CLAUDE.md
diff --git a/.claude/agents/project-architect.md b/.claude/agents/project-architect.md
index df6e6d71..3d8caace 100644
--- a/.claude/agents/project-architect.md
+++ b/.claude/agents/project-architect.md
@@ -12,7 +12,7 @@ You are a software architect for the NeoBoard monorepo — an open-source dashbo
 
 Read these files for project rules and architecture:
 
-- `CLAUDE.md` — Working rules, architecture boundaries, query safety, credentials
+- `.claude/CLAUDE.md` — Working rules, architecture boundaries, query safety, credentials
 - `claude_code_docs/` — Detailed docs on testing, widget architecture, performance
 
 ## Tech Stack
@@ -36,7 +36,7 @@ You may receive:
 
 1. If given an issue number, fetch it: `gh issue view <number>`
 2. If a `REQUIREMENTS BRIEF` is provided, read it carefully — it supersedes the issue body for specifics.
-3. Read `CLAUDE.md` and relevant docs in `claude_code_docs/`.
+3. Read `.claude/CLAUDE.md` and relevant docs in `claude_code_docs/`.
 4. Search the codebase thoroughly to understand existing patterns related to the feature:
    - Find files that will need modification
    - Identify interfaces and types to extend
diff --git a/.claude/hooks/check-boundaries.sh b/.claude/hooks/check-boundaries.sh
index ac559348..afee5369 100755
--- a/.claude/hooks/check-boundaries.sh
+++ b/.claude/hooks/check-boundaries.sh
@@ -1,5 +1,5 @@
 #!/bin/bash
-# Enforce package boundary rules from CLAUDE.md
+# Enforce package boundary rules from .claude/CLAUDE.md
 # - component/ must NOT import from app/ or connection/
 # - connection/ must NOT import React, app/, or component/
 INPUT=$(cat)
@@ -13,7 +13,7 @@ NEW_CONTENT=$(echo "$INPUT" | jq -r '.tool_input.new_string // .tool_input.conte
 # component/ must NOT import from app/ or connection/
 if [[ "$FILE_PATH" == *"/component/src/"* ]]; then
   if echo "$NEW_CONTENT" | grep -qE "(from|import|require)[[:space:]]*['\"].*/(app|connection)/|(from|import|require)[[:space:]]*['\"]@/(app|connection)"; then
-    echo "BLOCKED: component/ cannot import from app/ or connection/. See CLAUDE.md architecture rules." >&2
+    echo "BLOCKED: component/ cannot import from app/ or connection/. See .claude/CLAUDE.md architecture rules." >&2
     exit 2
   fi
 fi
@@ -21,7 +21,7 @@ fi
 # connection/ must NOT import from app/, component/, or React
 if [[ "$FILE_PATH" == *"/connection/src/"* ]]; then
   if echo "$NEW_CONTENT" | grep -qE "(from|import|require)[[:space:]]*['\"]react(-dom)?['\"/]|(from|import|require)[[:space:]]*['\"].*/(app|component)/|(from|import|require)[[:space:]]*['\"]@/(app|component)"; then
-    echo "BLOCKED: connection/ cannot import React, app/, or component/. See CLAUDE.md architecture rules." >&2
+    echo "BLOCKED: connection/ cannot import React, app/, or component/. See .claude/CLAUDE.md architecture rules." >&2
     exit 2
   fi
 fi
diff --git a/.claude/hooks/check-migration-guard.sh b/.claude/hooks/check-migration-guard.sh
index 1b9e88b5..f9daa40b 100755
--- a/.claude/hooks/check-migration-guard.sh
+++ b/.claude/hooks/check-migration-guard.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 set -euo pipefail
 # Hook: Prevent editing existing migration files (forward-only migrations)
-# Rule: "Forward-only. Idempotent." — CLAUDE.md
+# Rule: "Forward-only. Idempotent." — .claude/CLAUDE.md
 INPUT=$(cat)
 FILE_PATH=$(echo "$INPUT" | jq -er '.tool_input.file_path // .tool_input.filePath // empty') || {
   echo "BLOCKED: invalid hook payload (missing/invalid tool_input.file_path)" >&2
diff --git a/.claude/skills/next/SKILL.md b/.claude/skills/next/SKILL.md
index 8139b540..5dfc1824 100644
--- a/.claude/skills/next/SKILL.md
+++ b/.claude/skills/next/SKILL.md
@@ -44,7 +44,7 @@ PR base = same `$BASE` detected above (release/X.Y when active, else dev).
 
 ## Step 3 — Run /drill
 
-Before implementing, run `/drill <number>` to gather requirements, edge cases, and acceptance criteria. This is mandatory per CLAUDE.md.
+Before implementing, run `/drill <number>` to gather requirements, edge cases, and acceptance criteria. This is mandatory per .claude/CLAUDE.md.
 
 ## Step 4 — Read the issue and relevant docs
 
@@ -53,7 +53,7 @@ Identify which package(s) are affected: app/, component/, connection/.
 
 ## Step 5 — Implement
 
-Follow all CLAUDE.md rules. Respect package boundaries.
+Follow all .claude/CLAUDE.md rules. Respect package boundaries.
 If building UI, check existing components first (`find component/src -name '*.tsx'`).
 
 ## Step 6 — Test and lint
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 405aa057..89b7863c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,7 +16,9 @@ Chart-experience release: chart authoring, editing, rule-based styling and click
 
 ### Fixed
 
-- Saving a dashboard on a window narrower than ~1500px permanently squashed its layout toward a single column. One layout is stored per page, but the grid was handed that layout with four different column counts (lg:12, md:10, sm:6, xs:4); below `lg` it clamped every item into the narrower count and the drag handler persisted the clamped result as *the* layout. Each save ratcheted it further, irreversibly. The grid now scales instead of reflowing (#1375)
+- Connection reassignment was invisible to the optimistic lock: the update wrote `layoutJson` but never bumped `version`/`updatedAt`, so a browser with the editor open still held a matching version and its next save silently **reverted** the reassignment (#1376)
+- The import's "N widgets imported without a connection" count included markdown and iframe widgets, which are exported with an empty `connectionId` by design — so a correctly mapped import containing three text widgets reported three unassigned widgets (#1377)
+- Saving a dashboard on a window narrower than ~1500px permanently squashed its layout toward a single column. One layout is stored per page, but the grid was handed that layout with four different column counts (lg:12, md:10, sm:6, xs:4); below `lg` it clamped every item into the narrower count and the drag handler persisted the clamped result as _the_ layout. Each save ratcheted it further, irreversibly. The grid now scales instead of reflowing (#1375)
 - Every dialog animated in from the bottom-right. `zoom-in-95` alone leaves tailwindcss-animate's `from`-only keyframe at `translate3d(0,0,0)`, which overrides the `translate(-50%,-50%)` centring, so the box interpolated from a corner. Measured at **212.5px** off-centre at the first frame (584px for a full-size dialog); now invariant to float rounding. This is the third report of the same drift (#1373, after #1155 and `d723a127`)
 - Graph widgets re-ran their force layout and reshuffled on every scroll. Off-screen graphs were unmounted unconditionally to cap WebGL contexts, even with no context pressure — the Chart Reference graph page holds 8, half the browser ceiling. Unmounting is now gated on a live-graph budget (#1367)
 - ⌘E no longer remounts the whole dashboard. View and edit were separate routes, so toggling tore down and re-queried every widget and lost the scroll position; the UI is hoisted into a shared layout segment, so nothing unmounts and both URLs still work (#1370)
@@ -26,6 +28,9 @@ Chart-experience release: chart authoring, editing, rule-based styling and click
 
 ### Added
 
+- Bulk connector reassignment for a single dashboard, from the **Dashboard options** menu. Reassignment previously existed only as a connection-scoped operation that rewrote _every_ dashboard the caller could edit, reachable only from inside the delete-connection dialog (#1376)
+- After an import that skipped a connection, the unassigned widgets can be fixed in one action instead of one widget editor at a time (#1377)
+
 - A maximize toggle on the widget editor's query editor, doubling the editing width and giving 2.64× the height on open. Note the modal caps its body at `calc(90vh - 180px)`, so for an already-long query the gain is width plus moving the scroll into the editor rather than more height (#1374)
 
 ## [1.4.0] — 2026-07-29 — Audit, observability & correctness
@@ -60,14 +65,14 @@ An internal documentation audit cross-checked the repo's own claims against its
 ### Fixed
 
 - Pie "Top N Slices" kept the first N rows in query order instead of the N largest. Unless you had also enabled the separate "Sort Slices by Value" toggle — which defaults to off — the chart silently collapsed the largest slice in your dataset into "Other" and rendered cleanly. This is a wrong answer a user would have believed (#1287)
-- Neo4j integers above 2^53 failed `JSON.stringify` and returned an opaque `500 Query execution failed` for the *entire* query. A single snowflake ID, epoch-nanosecond value, checksum or large `id()` lost the whole result set, with no indication which column caused it — and the same query worked in Neo4j Browser (#1304)
+- Neo4j integers above 2^53 failed `JSON.stringify` and returned an opaque `500 Query execution failed` for the _entire_ query. A single snowflake ID, epoch-nanosecond value, checksum or large `id()` lost the whole result set, with no indication which column caused it — and the same query worked in Neo4j Browser (#1304)
 - Neo4j temporal values are now formatted with the driver's own lossless `toString()` instead of three hand-rolled branches. `LocalTime` rendered nanoseconds as if they were milliseconds — a 10^6 error affecting roughly one in ten times — `DateTime` dropped its timezone offset and all sub-second precision, and the unpadded `h:m:s` output broke lexicographic sort in table widgets. All three failed silently, showing a plausible wrong value (#1306)
 - A single non-finite coordinate made Leaflet throw and replaced an entire map widget — 1,000 valid markers included — with "Chart failed to render". Non-finite markers are now dropped (#1288)
 - The markdown widget's inline-emphasis passes ran over already-generated HTML and spliced `<em>` tags into `href`, `src` and `target` attributes; headings also carried no size class, so every heading rendered at 14px (#1290)
 - Clearing a numeric parameter input wrote `0` instead of leaving the field blank, because `Number("")` is `0`, not `NaN`, so the `isNaN(Number(raw))` guard never fired for the one input that reaches it (#1292)
 - Documentation accuracy pass. The docs site documented seven environment variables that exist nowhere in the code, invented CLI output, and made incorrect query-safety claims; `API_KEY_HMAC_SECRET` was missing from the Required Variables table, so an operator following the configuration page verbatim hit a boot failure (#1316). `CLAUDE.md` and `ARCHITECTURE.md` were corrected where they asserted behaviour the code does not have — a nonexistent `chart-registry` module, a nonexistent `--skip-migrations` flag, ORM-level tenant enforcement, and stale component counts (#1235, #1355)
 - Operator runbooks corrected. The documented restore recipes failed against a non-empty database (no `--clean`, and an auto-migrating app that created the schema before `pg_restore` ran) and never warned that a backup taken before a key rotation becomes permanently undecryptable; the real migration escape hatch is `MIGRATE_ON_START=0` and appeared in no operator doc; and the key-rotation procedure told operators to send a session cookie as an `Authorization: Bearer` header, which returns 401 (#1219, #1222, #1277)
-- `bash install.sh` — the README quick start — failed on every fresh clone, because `npm install --prefix` means the *global* install location to npm and broke the postinstall `npm link` (#1309)
+- `bash install.sh` — the README quick start — failed on every fresh clone, because `npm install --prefix` means the _global_ install location to npm and broke the postinstall `npm link` (#1309)
 - The published `@neoboard/cli` could not run outside the monorepo: project-root detection threw, and the compose files were not packaged (#1315)
 - `neoboard config set ports.app 4000` was honoured by doctor, the readiness probes, the generated `DATABASE_URL` and the banner URLs — but not by the actual port bindings, which stayed hardcoded (#1313)
 - A missing `API_KEY_HMAC_SECRET` now fails fast with the generate command instead of crash-looping, and it is listed in the compose files, the Dockerfile, and both "Required env vars" headers (#1221)
@@ -80,7 +85,7 @@ An internal documentation audit cross-checked the repo's own claims against its
 - The connection-module cache key omitted both the password and any tenant discriminator, so two connection rows in different tenants naming the same host, username and database collapsed onto one cached pool. A caller who knew the URI and username but not the password received a working, already-authenticated pool belonging to whoever cached it first. The key now includes the password and tenant (#1300)
 - The login form's submit is gated on React hydration. Before hydration a click ran the browser's native form submit — a GET that put the email and plaintext password in the URL, and therefore in browser history and any access log (#1321)
 - Any authenticated user could permanently wedge a connector's query scheduler by submitting a whitespace-only query: `runQuery` returned without invoking a terminal callback, so the slot never freed. After `maxConcurrent` such requests every subsequent query on that connection failed with 408/503 until the process restarted. The shared SDK helper now always settles the caller (#1301)
-- Write queries buffered the entire result set into the Node heap before the row limit was applied, so `MAX_ROWS+1` bounded only what was *displayed*. One Form submit against a large table could exhaust the heap shared by every tenant on the process. Both connectors now drain writes through a cursor (#1298, #1326)
+- Write queries buffered the entire result set into the Node heap before the row limit was applied, so `MAX_ROWS+1` bounded only what was _displayed_. One Form submit against a large table could exhaust the heap shared by every tenant on the process. Both connectors now drain writes through a cursor (#1298, #1326)
 - Secrets are redacted at the pino logging boundary by default, at three install points covering the merged record, the message string and printf args, and the bare-Error path. Previously the always-on redaction covered five key names at one nesting level, and the URI-aware scrubber ran only under `LOG_ANONYMIZE=true`, which defaults to false. The audit found **no active credential leak** — all 33 `console.*` sites were reviewed and the connection package was already hardened — so this is defense in depth against a future call site, not a fix for a known exposure. Note that audit middleware still logs user-supplied query text verbatim; a secret embedded in a query literal reaches structured logs (#1227)
 - `neoboard doctor`'s credential probe reported "no stored credentials yet" on every local-mode install because its SQL never survived the shell, silently disabling the check entirely. A check that reports "nothing to verify" when it is broken is worse than no check (#1352)
 
diff --git a/app/src/__tests__/test-environment-boundary.test.ts b/app/src/__tests__/test-environment-boundary.test.ts
index 2e38b874..b33df707 100644
--- a/app/src/__tests__/test-environment-boundary.test.ts
+++ b/app/src/__tests__/test-environment-boundary.test.ts
@@ -24,7 +24,7 @@
  * test is here so the next one fails fast and legibly instead.
  *
  * If this fails: rename your file to `.test.tsx` and drop the docblock. Do not
- * add an allowlist entry — the `unit` project has no DOM by design (CLAUDE.md,
+ * add an allowlist entry — the `unit` project has no DOM by design (.claude/CLAUDE.md,
  * "Testing Boundaries").
  */
 import { describe, it, expect } from "vitest";
diff --git a/app/src/lib/__tests__/docs-accuracy.test.ts b/app/src/lib/__tests__/docs-accuracy.test.ts
index 33c3e6b1..57e758e4 100644
--- a/app/src/lib/__tests__/docs-accuracy.test.ts
+++ b/app/src/lib/__tests__/docs-accuracy.test.ts
@@ -6,11 +6,11 @@ import { fileURLToPath } from "node:url";
 /**
  * Guards the repo's own documentation against drift (#1235).
  *
- * CLAUDE.md is loaded as ground truth by agent sessions, so a stale path or
+ * .claude/CLAUDE.md is loaded as ground truth by agent sessions, so a stale path or
  * count there becomes a wrong assumption in generated code. These tests fail
  * loudly instead.
  *
- * Scope: the repo's OWN docs (CLAUDE.md, ARCHITECTURE.md, .claude/skills).
+ * Scope: the repo's OWN docs (.claude/CLAUDE.md, ARCHITECTURE.md, .claude/skills).
  * The published site under docs/src has its own guard —
  * scripts/__tests__/docs-accuracy.test.mjs — with the same name and a
  * different target. Add site checks there, repo checks here.
@@ -53,7 +53,7 @@ const countFiles = (dir: string, ext = ".tsx") =>
   readdirSync(resolve(REPO_ROOT, dir)).filter((f) => f.endsWith(ext)).length;
 
 describe("documentation accuracy", () => {
-  describe.each(["CLAUDE.md", "ARCHITECTURE.md"])("%s", (docName) => {
+  describe.each([".claude/CLAUDE.md", "ARCHITECTURE.md"])("%s", (docName) => {
     it("references only file paths that exist", () => {
       const missing = referencedPaths(readDoc(docName)).filter(
         (p) => !existsSync(resolve(REPO_ROOT, p)),
@@ -92,17 +92,17 @@ describe("documentation accuracy", () => {
     });
   });
 
-  it("CLAUDE.md documents MIGRATE_ON_START, not a --skip-migrations flag", () => {
+  it(".claude/CLAUDE.md documents MIGRATE_ON_START, not a --skip-migrations flag", () => {
     // Naming the flag to debunk it is fine (readers search for it); asserting
     // it exists is not. The real escape hatch is MIGRATE_ON_START=0 (#1222).
-    const doc = readDoc("CLAUDE.md");
+    const doc = readDoc(".claude/CLAUDE.md");
     expect(doc).toContain("MIGRATE_ON_START");
     // Assert the canonical debunk is present rather than blocklisting one
     // phrasing — "use `--skip-migrations`" would slip past a negative regex.
     expect(doc).toContain("there is no `--skip-migrations` CLI flag");
   });
 
-  it("CLAUDE.md points at the tenant guard by path, and that path exists", () => {
+  it(".claude/CLAUDE.md points at the tenant guard by path, and that path exists", () => {
     // The section used to say a forgotten tenant filter is "a leak that
     // nothing catches. Adding a guard is tracked in #1226." The guard shipped
     // (#1351), so that was false in a direction that changes behaviour: an
@@ -111,7 +111,7 @@ describe("documentation accuracy", () => {
     //
     // Pinned by PATH rather than by phrasing, so a rewrite that drops the
     // pointer fails while a rewrite that keeps it is free to reword.
-    const doc = readDoc("CLAUDE.md");
+    const doc = readDoc(".claude/CLAUDE.md");
     const guardPath = "app/src/lib/db/__tests__/tenant-scope.test.ts";
     expect(doc).toContain(guardPath);
     expect(existsSync(resolve(REPO_ROOT, guardPath))).toBe(true);
@@ -131,7 +131,7 @@ describe("documentation accuracy", () => {
   });
 
   it("the deploy skill does not send auditors looking for a flag that does not exist", () => {
-    // CLAUDE.md was corrected but the deploy skill still listed
+    // .claude/CLAUDE.md was corrected but the deploy skill still listed
     // "`--skip-migrations` flag missing or undocumented" as a gap to capture
     // — so the audit that produced #1222 was instructed to hunt a flag that
     // was never implemented. A prompt is documentation too (#1222).
diff --git a/app/src/lib/db/__tests__/tenant-scope.test.ts b/app/src/lib/db/__tests__/tenant-scope.test.ts
index e50dea8b..cfc0872b 100644
--- a/app/src/lib/db/__tests__/tenant-scope.test.ts
+++ b/app/src/lib/db/__tests__/tenant-scope.test.ts
@@ -4,7 +4,7 @@
  * `tenant_id` is on every application table, but nothing enforces that a
  * query filters by it: `app/src/lib/db/index.ts` is a plain Drizzle client
  * with no middleware, and there is no Postgres RLS. The rule ("every query
- * carries `eq(table.tenantId, session.tenantId)`") lives only in CLAUDE.md,
+ * carries `eq(table.tenantId, session.tenantId)`") lives only in .claude/CLAUDE.md,
  * so a handler that forgets it leaks across tenants and nothing fails.
  *
  * This test is that missing failure. It parses every file under `app/src`,
diff --git a/package.json b/package.json
index 58e3a042..7120836d 100644
--- a/package.json
+++ b/package.json
@@ -39,7 +39,7 @@
     "verify": "npm run typecheck && npm run lint && npm run test && npm run test:scripts",
     "typecheck": "npm -w component exec tsc -- --noEmit && npm -w app exec tsc -- --noEmit",
     "sonar:local": "node scripts/sonar-local.mjs",
-    "review:local": "coderabbit review --base release/1.5 --committed -c CLAUDE.md -c .coderabbit.yaml",
+    "review:local": "coderabbit review --base release/1.5 --committed -c .claude/CLAUDE.md -c .coderabbit.yaml",
     "test:scripts": "vitest run scripts/__tests__ --exclude '**/.claude/**' && node --test 'scripts/__tests__/*.node-test.mjs'"
   },
   "lint-staged": {