# REPORT — felhom-controller v0.165.1 — Native "Megosztás…" button in the share modal (Web Share API)

## Baseline

| Repo | main @ start | version start → target |
|------|--------------|------------------------|
| felhom-controller | `570fb30` | v0.165.0 → **v0.165.1** |

Clean tree, `HEAD == origin/main`, verified before build.

## What shipped

The v0.165.0 "Indítópult megosztása" modal gains a feature-detected **"Megosztás…"** button that
opens the OS share sheet via `navigator.share`, sending the share **title + text + URL only**. Template
JS + tests only — no backend, no routes, no settings, no dependency changes.

## Files modified

- `controller/internal/web/templates/launcher.html` — the `#share-native-btn` button in the
  share-link-row (`display:none` in markup); `nativeShare()` in the modal script; a `navigator.share`
  feature-detect reveal in the existing IIFE.
- `controller/internal/web/launcher_share_modal_test.go` — **new**: Group A + Group B render tests.
- Docs: `CHANGELOG.md`, `controller/README.md`, `CONTEXT.md`.

## Behavior

- **Supported browser:** `#share-native-btn` is revealed (`navigator.share` truthy) and calls
  `navigator.share({title:'Indítópult — <domain>', text:'Az otthoni alkalmazások egy helyen.',
  url:<ShareURL>})` — **no `files:` key**. User cancel (`AbortError`) → silent; the modal stays open.
- **Unsupported browser** (Firefox desktop, Chrome/Linux): the button stays `display:none` (JS only
  ever reveals it); "Link másolása" works exactly as in v0.165.0.
- **Non-cancel rejection:** falls back to `copyShareLink()` so the user still keeps the link on the
  clipboard (with the existing "Másolva" feedback).

## Design ruling (CONTEXT)

The **QR is NOT attached** to the share payload (no Web Share Level-2 `files:`). File-share support is
narrow and several targets drop the URL when handed file+URL, leaving an unscannable QR picture in a
chat. The QR's job — physical cross-device scanning — is already served by the modal image (mobile
long-press covers "send the picture" with zero code).

## Tests + red-proofs

`go build ./... && go vet ./... && go test ./...` — all green. Gates: template_id, emoji,
native_confirm — OK.

New tests (`launcher_share_modal_test.go`), both PASS:

| Group | Scenario | Test |
|---|---|---|
| A | button hidden-by-default + feature-detect reveal + title/text/url-only payload (no `files:`) + copy retained | `TestShareModal_NativeShareButton` |
| B | AbortError-silent branch + non-abort fallback to `copyShareLink()` | `TestShareModal_NativeShareFallback` |

Companion **red-proofs** (mutate → FAIL → restore → green), both verified:
1. **Group A:** removed `style="display:none"` from the button (revealed it in markup) →
   `TestShareModal_NativeShareButton` FAILS the hidden-by-default assertion. Restored → green.
2. **Group B:** swapped the `.catch` to swallow all errors (dropped the `copyShareLink()` fallback) →
   `TestShareModal_NativeShareFallback` FAILS the fallback-presence assertion. Restored → green.

## Deployed version + validation (§13)

_Filled after build + deploy to guest 9201 — rendered-page assertion transcript below._

<!-- LIVE-VALIDATION -->

## Pending human check (stated, not claimed)

The **OS share sheet interaction is an OS-level dialog** that endpoint checks and browser automation
cannot exercise. CC validates markup + JS presence at the rendered `/launcher` (authed curl, Group-A
strings). The single pending manual check is the operator's: desktop Chrome/Edge or a phone → the
"Megosztás…" button is visible → the sheet opens → a WhatsApp/email target receives the title + a
tappable link; on Firefox desktop the button is absent and "Link másolása" still works.

## Observations

- No Web Share Level-2 `files:` — ruled out above (narrow support; URL-drop when given file+URL).
- "Link másolása" is unchanged and remains the universal path; feature detection only, no UA sniffing.
- The share `text` is deliberately conjugation-free ("Az otthoni alkalmazások egy helyen.") — a
  user-to-user message, not magázó UI copy.