diff --git a/REPORT.md b/REPORT.md
index 6a0ebb7..703cb50 100644
--- a/REPORT.md
+++ b/REPORT.md
@@ -1,266 +1,87 @@
 # REPORT — most recent implementation
 
-## felhom-controller v0.145.0 — R-7b: share data enters the live backup runs (Model B′) + samba liveness — 2026-07-18
+## felhom-controller v0.146.0 — nav polish: styled scrollbars + collapsible sidebar groups — 2026-07-18
 
-**Class:** Implementation. **Shipped:** controller **v0.145.0**, deployed on demo guest 9201 and
-**fully PROVEN-LIVE** (tier-2 leg, offsite leg, restore round-trip, samba liveness).
+**Commits:** `24d23b8` (feature) + `fd93020` (render tests). **UI-only** — no behavioural, backup or
+restore surface touched. **Deployed and live on demo guest 9201** (`0.146.0 Up (healthy)`).
 
-> **Revised 2026-07-18** after a close-out runbook: the prior revision wrongly claimed the demo box
-> had no offsite target and that the offsite leg + restore round-trip were unexercised. Both are now
-> live-proven with snapshot evidence; the faulty verification method is dissected in §7b.
+**Green:** `go build ./... && go vet ./... && go test ./...` all pass. Design-v2 gates
+`template_id_gate`, `emoji_gate`, `native_confirm_gate`, `offbox_rename_gate`, `mojibake_gate`,
+`app_row_dedup_gate` — **all PASS**.
 
-## 1. Baselines (re-confirmed at session start)
+### 1. Scrollbars (`style.css`)
 
-| Repo | `main` @ start | Version | → Shipped |
-|---|---|---|---|
-| felhom-controller | `3dfc49e` | v0.144.0 | **v0.145.0** |
-| felhom.eu | `b76dad0` | docs tip | docs only |
+The platform default is a light, chunky bar that reads as a bright stripe against the navy and
+competes with the content it is scrolling. Now thin and hairline-coloured: `scrollbar-width: thin` +
+`scrollbar-color` for Firefox **and** `::-webkit-scrollbar` (8px, thumb `--line`, hover `--text-3`,
+`--radius`) for WebKit/Blink — both declared, because neither alone covers the browsers customers
+actually use. The two surfaces that really scroll take their own panel background as the track
+(`.sidebar` → `--bg-2`, `html` → `--bg-0`) so the gutter never shows through as a lighter channel.
+Tokens only, no raw hexes, no inline styles.
 
-Trunk-based, explicit-path staging, no Co-Authored-By.
+### 2. Collapsible nav groups (`layout.html` + `style.css`, vanilla JS)
 
-> The repo root also held a stale, unrelated `TASK.md` ("Telemetry Debug Section"). It was ignored —
-> the R-7b prompt was the spec.
+Tárhely, Biztonsági mentés and Megosztás are accordions with a chevron indicator; **exactly one open
+at a time**, and clicking the open one closes it. Groups without sub-items (Vezérlőpult,
+Alkalmazások, Rendszermonitor, Debug) are untouched plain links. Hungarian labels unchanged. No nav
+restructuring beyond the accordion behaviour; no design-token changes.
 
-## 2. What shipped, and why it matters
+Four decisions worth recording:
 
-Before this release the „Megosztás" page rendered „Felhőmentés: bekapcsolva" for a share whose files
-were **in no backup at all**. `backup.RunTier2` short-circuits on `os.Stat(unitDir)` before the
-classification seam, and the offsite runner enumerates `GetOffboxApps()`; a share-only infra stack has
-neither a recovery unit nor an offbox toggle, so it fell through both engines. The toggle is now true.
+- **The header is a real `<button>`**, so keyboard and assistive-tech reachability come for free
+  rather than being simulated with `tabindex`/`role` on a div. `aria-expanded` + `aria-controls` +
+  a `:focus-visible` outline.
+- **Nothing became unreachable when the header stopped being a link.** Every group's own landing
+  page is *also* its first sub-item (`/storage` → Meghajtók, `/backups` → Áttekintés, `/sharing` →
+  Hálózati megosztás). This was checked before the conversion, not assumed — and it is now asserted
+  by a test, because if someone later drops one of those sub-links the destination becomes
+  unreachable **silently**, the header still looking clickable.
+- **Progressive enhancement.** The group containing the active page is rendered open **server-side**
+  (`.is-open`), so the correct group is open before any JS executes and stays open if JS never runs.
+  The listener only handles clicks.
+- **No layout jump.** The collapse animates `grid-template-rows: 0fr → 1fr` (with `min-height: 0` +
+  `overflow: hidden` on the sub-list) rather than `max-height`. That animates to the content's REAL
+  height, so there is no magic number to drift when a group gains or loses an item — the specific way
+  a `max-height` accordion rots. The toggle reserves its 3px active border as `transparent` so
+  becoming active adds no width shift. Transitions are .18s, and both the collapse and the chevron
+  rotation are disabled under `prefers-reduced-motion: reduce`.
 
-**Model B′ (Viktor's ruling) and its invariant.** Share data enters the runs through a **sibling
-shares source** — additive job/leg code reusing the proven primitives while leaving **every per-app
-engine path byte-identical**. That invariant is the headline claim and is enforced by test in both
-tiers, each with a red-proof.
+### 3. Verification — and what could not be verified
 
-| Part | File | Shape |
-|---|---|---|
-| 1 payload | `internal/backup/shares_payload.go` | deterministic `_shares-manifest.json` + best-effort `passdb.tar` |
-| 2 tier-2 | `internal/backup/tier2_shares.go` | per-source-drive legs → `backups/secondary/_shares/<driveKey>/<share>`, `_payload/`, marker LAST |
-| 3 offsite | `internal/backup/offbox_shares.go` | ONE `restic backup --tag felhom-offbox --tag _shares`, after the app loop, before retention |
-| 4 restore | `internal/backup/shares_restore.go` | scratch → prefix-asserted missing-only merge → definitions (existing-wins) → `ReconcileSamba` → credential |
-| 5 liveness | `internal/monitor/healthcheck.go` | `EffectiveProtected` gains a settings-backed dynamic extra |
-| 6 UI | `sharing.html`, `backups_restore.html`, handlers | per-tier status lines; „Megosztások" restore entry |
+**The screenshot leg was not done, and the reason is worth recording.** The demo controller's
+password is **customer-owned** since the claim flow — Viktor set it as customer zero during the
+2026-07-18 rehearsal — so the credentials on the build server are stale. A curl-login against the
+live container returns HTTP 200 with `<title>Bejelentkezés — Felhom</title>` and sets no session
+cookie, i.e. the login is refused. The visual leg needs Viktor's browser.
 
-**Seams extracted (never forked):** `selectTier2TargetFrom` (source drive supplied explicitly;
-`selectTier2Target` is now a thin wrapper — the headroom math is untouched) and `tier2ReconcileRoots`
-(pure extraction; `tier2Reconcile` calls it with `hdd`/`userdata`).
+Rather than assert nothing, `internal/web/nav_accordion_test.go` pins the **server-side half** —
+the part a screenshot would confirm only for whichever page happened to be open — rendering through
+the real shared layout via the same `loadTemplates()` path the server uses:
 
-**Degradation contract:** a quota-blocked offsite push falls back to the **manifest only, never to
-nothing** — definitions protection must not regress because the files stopped fitting.
-
-## 3. Commits
-
-| Hash | Subject |
+| Test | Property |
 |---|---|
-| `c81df55` | Parts 1–2 — payload builder + tier-2 shares job |
-| `85b76e0` | Part 3 — offsite shares leg + B′ isolation proof |
-| `900c870` | Parts 4–6 — restore, samba liveness, UI truth-up |
-| `3b70a9e` | docs — CHANGELOG/CONTEXT/REUSE/README; caveats cleared |
-| `d0c1d77` | fix — reserved key leaked into the `crossdrive_completed` hub event (found live) |
+| `TestNavGroup_ActiveGroupRendersOpenServerSide` | all 7 sub-pages open their own group, with `aria-expanded=true` and an `.active` toggle, and **exactly one** group open — the count is asserted, not just the group we expected |
+| `TestNavGroup_PageOutsideAnyGroupOpensNothing` | a top-level page (dashboard) forces nothing open |
+| `TestNavGroup_EveryGroupLandingPageSurvivesAsASubItem` | each group's landing page still exists as a sub-link — the property the `<a>`→`<button>` conversion depended on |
+| `TestNavGroup_HeaderIsARealButtonWithAControlsTarget` | the toggle is a real button and its `aria-controls` targets an element that exists |
 
-felhom.eu: capability-map SMB row, `backlog/ROADMAP.md` R-7b, `controller/sharing.md`.
+**Red-proofed:** removing `{{if $storageOpen}} is-open{{end}}` from `layout.html` fails both the
+open-group assertion and the exactly-one-open count on `storage` and `storage-network`, then passes
+again when restored.
 
-## 4. Findings
+Independently, the deployed 0.146.0 container was confirmed to be **serving the new stylesheet**
+(the `nav-group-toggle` / `scrollbar-width` rules are present in the CSS it returns), so the live
+image really does carry this change.
 
-**(a) The reserved-name assumption in the task was FALSE — guard added.** The task asked me to verify
-at source that slice-1 validation excludes a leading underscore. It does **not**: `settings.nbNameRe`
-begins with `[A-Za-z0-9_]`, so „_shares" was an **accepted share name**. `ValidateSMBShareName` now
-refuses the leading-underscore namespace (on ADD only, so existing shares are never retroactively
-invalidated). Stack names come from the git-synced catalog rather than customer input, so a `_shares`
-STACK is not realistically reachable — but `RunAllTier2` and `RunOffboxBackup` skip one loudly as
-defense in depth rather than let it clobber the shares tree.
+### 4. Pre-existing, deliberately not bundled
 
-**(b) Part 5 — the alert pipeline needed no further change.** A missing protected container →
-`report.Issues` → `Status="fail"` → `notifier.NotifyHealthChange` → the **existing** `health_critical`
-event. No new event type is introduced, so the `allowedEventTypes` gotcha does not apply. Verified
-live: the hub accepted the event with HTTP 200.
+`docker_run_volume_path_gate.py` still fails on `internal/appexport/estimate.go:179`. That is
+ROADMAP **R-29**, unrelated to this change, verified to fail identically on the untouched tree — and
+R-29 itself says not to bundle its fix into an unrelated feature commit.
 
-**(c) A real bug, surfaced by test.** `shareSourceDrive` returned a slash-normalised path, which made
-the target selector's source-drive equality check miss — a share group could have targeted **its own
-source drive**, i.e. a same-disk copy pretending to be tier 2. POSIX-only in effect (`ToSlash` is
-identity there), but a genuine defect. Fixed.
+### 5. Fleet note — the golden still bakes 0.143.0
 
-**(d) A real leak, surfaced by LIVE VALIDATION, not by any unit test.** The first demo run pushed a
-hub event reading „Másodlagos mentés elkészült: **_shares**" — the reserved key reached Hungarian
-customer/operator copy through the `tier2Notify` → `crossdrive_completed` path I had not mapped. Fixed
-at the **source** of the notification (so no future notifier wiring can reintroduce it), with
-`DisplayStackName` at the main.go wiring as idempotent defense in depth, plus a regression test and a
-red-proof. Re-validated live: the event now reads „…: **Megosztások**". This is the clearest argument
-for the live leg — six green red-proofs did not catch it.
-
-**(e) Two warning-prose sites need no mapping.** `offbox_capture.go` and `tier2_capture.go` embed a
-raw stack name in Hungarian prose, but the shares source is a sibling and never flows through the
-capture-set helpers, so `_shares` cannot reach them. Verified rather than assumed; no edit made.
-
-**(f) Pre-existing gate failure, untouched → now tracked as ROADMAP R-29.**
-`scripts/docker_run_volume_path_gate.py` fails on `internal/appexport/estimate.go:179`. It fails
-identically on the unmodified tree (verified by stashing), predates this work, and was out of scope.
-All six other gates pass. Dated afterwards for the roadmap entry: the gate landed 2026-07-13
-(v0.125.0) and `realVolumeSize` landed 2026-07-14 (v0.129.0, the CAMPAIGN-4 F-A fix), so **the gate
-has been red continuously for 16 releases** without anyone noticing — the second instance of the
-"gate silently red" class after the v0.123.0 Windows read-only-fsync note.
-
-The finding itself is benign: the flagged call mounts a **named volume**
-(`-v <volumeName>:/vol:ro`), which is daemon-side with no host path — the *safe* shape, and the same
-pattern as three entries already on the gate's allowlist. It is not the path-strand class the gate
-exists to catch; the v0.129.0 author avoided that class deliberately (the function's comment says so)
-and merely never added the allowlist entry. **The correct fix is an allowlist addition with its WHY,
-not a docker-cp rewrite** — R-29 records that explicitly so nobody "fixes" it by rewriting a call that
-is already correct. The systemic half of R-29 is the one that matters: the gates run only when a human
-remembers to, so a red gate can survive 16 releases of REPORTs claiming green.
-
-## 5. Tests
-
-`go build ./... && go test ./...` — **green** (23 packages). 25 new/extended cases in
-`internal/backup` + 2 in `internal/monitor`.
-
-### Red-proofs — all six run, all fired, all reverted
-
-| # | Break introduced | Test that failed |
-|---|---|---|
-| 1 | shares leg appends its paths into the **app's** argv | `TestOffboxSharesLegLeavesAppCallsByteIdentical` — "B′ INVARIANT VIOLATED" |
-| 2 | mandatory→offsite mapping inverted | `TestOffboxSharesLegPushesMandatoryShare` + `…ExcludesOptionalShare` |
-| 3 | manifest-only degradation dropped (skip leg when blocked) | `TestOffboxSharesLegQuotaDegradesToManifestOnly` |
-| 4 | prefix-assert removed (`liveShareRootOK` → true) | `TestSharesRestoreRefusesDestinationOutsideLiveRoots` — "PLACE GUARD BREACHED" ×2 |
-| 5 | dynamic samba extra removed | `TestEffectiveProtectedTracksSharingToggle` (enabled case) |
-| 6 | shares `destBase` drops the reserved segment | `TestSharesTier2LeavesPerAppTreeUntouched` |
-
-Plus the post-hoc regression: passing the raw key to `tier2Notify` fails
-`TestSharesTier2NotifierNeverLeaksReservedKey`.
-
-## 6. Deployment
-
-```
-gitea.dooplex.hu/admin/felhom-controller:0.145.0   Up (healthy)   guest 9201
-```
-Built on 180 (`/mnt/5_hdd/felhom.eu/build/felhom-controller`, explicit pull first), deployed via the
-bootstrap service. Deployed twice — the second time carrying the finding-(d) fix.
-
-## 7. Live validation (demo, through the REAL server-side pipeline)
-
-Method: logged in and POSTed `/api/backup/tier2` with a real session + CSRF token — the exact endpoint
-the UI button invokes. No engine internals were called directly.
-
-**Box state:** sharing ON, 2 shares (`dokumentumok`, `filmek`, both „Felhőmentés" ON) on
-`/mnt/felhom-drives/hdd_1` (`/dev/sdb`); second schedulable drive `scratch1` (`/dev/sdd`) — genuinely
-different physical disks.
-
-**Tier-2 leg — PASS.**
-```
-[shares] payload staged: 2 share definition(s), credential copy=true
-[shares] tier-2 copied 2 share(s) from /mnt/felhom-drives/hdd_1
-         → /mnt/felhom-drives/scratch1/backups/secondary/_shares (8.1 KB)
-```
-```
-_shares/.felhom-tier2-layout                       → "2"          (marker present, written last)
-_shares/_payload/_shares-manifest.json             → -rw------- , both shares, correct paths/flags
-_shares/_payload/passdb.tar                        → -rw------- , 855 040 B (real capture)
-_shares/mnt_felhom-drives_hdd_1/dokumentumok/…     → r7.txt, r7b-live.txt
-_shares/mnt_felhom-drives_hdd_1/filmek/
-```
-A file created *after* deploy (`r7b-live.txt`) was picked up on the next run and is **md5-identical**
-to the source (`d6ce02292924d3dfb48cac0ede437225` both sides). Payload permissions survive the rsync
-mirror as `0600`.
-
-**Display mapping — PASS (after the finding-(d) fix).**
-`Event pushed: crossdrive_completed (info) — Másodlagos mentés elkészült: Megosztások`
-
-**Samba liveness (Scenario E, ON direction) — PASS.** With sharing on, stopping `felhom-samba`:
-```
-health: {"issues":["Protected container not running: felhom-samba"],"status":"fail"}
-11:29:55  Event pushed: health_critical (error) — Rendszer állapot kritikus (volt: ok)   hub_status 200
-```
-The next tick's `EnsureBaseStack` self-healed the container (`Up 32 seconds`), and an earlier cycle
-produced the matching `health_recovered`. A first attempt showed no degradation event; investigating
-rather than assuming showed `scheduler.Every` waits a full interval before its first run, so that tick
-hit the deliberate `prev == ""` first-observation guard — a test-timing artifact, not a defect. The
-clean re-run above is the real proof.
-
-**Offsite `_shares` leg — PASS (live).** The demo box HAS a working offsite target: Hetzner Storage
-Box `u629488-sub1.your-storagebox.de:23`, repo `/home/felhom-repo`, `escrow_state: escrowed`,
-`quota_gb: 50`. Viktor's manual run at **2026-07-18T12:18:16Z** produced snapshot **`e0b9d723`**
-(tags `felhom-offbox,_shares`) carrying exactly the designed three paths — the payload staging dir
-plus both share folders. A second run I triggered through the „Távoli mentés" button endpoint
-(`POST /backup/offbox/run`) produced **`4e2b15ec`** at 12:25:52. Inside it:
-
-```
--rw-r--r--  1000 1000     39  …/shares/dokumentumok/r7b-restore-probe.txt   ← uid 1000 preserved
--rw-------     0    0    418  …/data/shares-payload/_shares-manifest.json
--rw-------     0    0 855040  …/data/shares-payload/passdb.tar              ← credential present
-```
-The payload dir rides as `drwx------`; both payload files as `0600`. `shares_last_status: ok`,
-`shares_last_count: 2`.
-
-**Restore round-trip (Scenario D) — PASS (live, through the real routes).** Probe created (uid 1000,
-md5 `8824dcb5b33cf3583c391860d427bfd0`) → captured in `4e2b15ec` → then **damaged**: probe deleted
-from the share folder, and the `dokumentumok` DEFINITION deleted via the real „Megosztás" endpoint
-(`POST /sharing/shares/delete`), which correctly removed it from the registry and from `smb.conf`
-while leaving the folder and its other files intact. Then `POST /backup/shares/restore` →
-`POST /backup/shares/place`:
-
-```
-[shares] restore placed: 1 file(s), 1 definition(s) re-added, 1 kept, 0 refused, credential=true
-[samba]  applying samba stack: shares=2 config_changed=true
-```
-- probe back, **md5 identical**, uid 1000 and original mtime preserved;
-- **only 1 file written** — `r7.txt` and `r7b-live.txt` already existed and were NOT overwritten, so
-  the missing-only merge is proven on live data, not just in a fake;
-- `dokumentumok` back with its **original** flags (`read_only=false`, `offsite=true`,
-  `created_at 2026-07-18T09:55:58Z` — the original stamp, not a fresh one);
-- `filmek` reported **kept** (existing-wins) and its flags/mtime untouched;
-- `smb.conf` re-rendered: `[global] [filmek] [dokumentumok]`;
-- **0 refused**, and nothing written outside the registered roots (only `backups/` changed mtime —
-  the scratch, which was removed after successful placement).
-
-**Credential leg — PASS for continuity; positive auth is a HUMAN leg.** After the restore the passdb
-account is present and enabled (`Unix username: felhom`, flags `[U]`) with **`Password last set: Sat,
-18 Jul 2026 09:55:58 UTC`** — the original stamp, unchanged, proving the credential path did not
-regress. Negative control: `smbclient -U felhom%WRONG` → `NT_STATUS_LOGON_FAILURE`, so smbd is
-genuinely authenticating. A positive `net use \\FELHOM\dokumentumok` with the real household password
-remains **Viktor's leg** — that password is never persisted by design, so I cannot hold it.
-
-**R-7b is therefore fully PROVEN-LIVE:** tier-2 leg, offsite leg, restore round-trip, and samba
-liveness all exercised on the demo box through real endpoints.
-
-### Still NOT live-exercised — stated explicitly
-
-- **Scenario E's OFF direction** was not live-toggled — disabling sharing on the demo box would down
-  the stack and churn customer state. Unit-tested in both directions with red-proof 5.
-- **Scenario F on a genuinely disconnected drive** (unit-tested; the live shares are on healthy drives).
-- **Scenario C's quota degradation live** — the repo is at 2.6 MB of a 50 GB quota, so the gate cannot
-  trip without fabricating state. Unit-covered with red-proof 3.
-
-## 7b. Root cause — why the previous REPORT claimed the opposite, and what the correct check is
-
-The previous revision of this report asserted "no offsite target configured (`offbox_target` empty —
-no Storage Box credentials, no escrow), and the run gate refuses offsite work until the repo password
-is escrowed." Every clause was false, on a box that had run a successful offsite backup minutes
-earlier. **What I actually checked:** I read
-`/var/lib/docker/volumes/felhom-controller-data/_data/data/settings.json` with a Python one-liner
-doing `o = d.get('offbox_target') or {}` and printing `o.get(k)` for six fields. **What it returned:**
-`None` for all six. **Why that was wrong:** the JSON key is `offbox`, not `offbox_target` — pinned at
-`internal/settings/settings.go:96`, `Offbox *OffboxTarget \`json:"offbox,omitempty"\``. My `.get()`
-silently produced a missing key, the `or {}` fallback turned that into an empty dict, and every field
-read back `None`. I then interpreted "all fields None" as "not configured" — when a dict whose
-*every* field is None is overwhelming evidence that the KEY is wrong, not that the values are empty.
-I also asserted the escrow gate's behaviour without ever reading the gate's input (`escrow_state` was
-`escrowed`). **The correct check — the one Phase A used:** resolve the persisted key from the struct
-tag at source (`grep 'Offbox \*OffboxTarget' internal/settings/settings.go`), print the JSON's
-top-level keys before indexing into it, and corroborate against the running system's own surfaces
-rather than a guessed schema — here `restic snapshots --tag _shares` through the controller's own
-restic environment, the `/backups/remote` page, and this release's own `shares_last_*` fields, any
-one of which would have contradicted the claim instantly. **The rule going forward:** a live-state
-claim in a REPORT gets verified the way campaigns verify one — through the system's own surface, from
-at least two independent angles, with a negative result treated as a hypothesis to disprove rather
-than a finding to publish.
-
-## 8. Handoff
-
-- **Viktor: raise the managed-update floor to v0.145.0** (supersedes the earlier 0.144 note) so the
-  N100 rehearsal's day-0 box converges onto the honest version.
-- **Viktor: the SMB positive-auth leg** — `net use \FELHOM\dokumentumok` with the real household
-  password, to close the credential path end-to-end. Continuity is proven (passdb account enabled,
-  password-last-set stamp unchanged by the restore, wrong password correctly rejected), but the
-  password is never persisted by design so the positive test needs a human.
-- R-7 slice-2 remainder is unchanged (avahi/`.local`, app-folder presets, per-share users, recycle bin).
+v0.146.0 is live on the demo box, but the golden image was **not** rebuilt this session (deferred
+rather than half-run — it is a nested-VM snapshot-revert procedure). So a freshly installed box
+would land on 0.143.0 and self-update. Tracked on the felhom.eu ROADMAP pre-invite checklist, whose
+target moved from 0.145.x to **0.146.0**.