2 Commits

Author SHA1 Message Date
Wes
f59b326568 Fix mobile onboarding policy loading, browser cancellation and pairing feedback (#8874)
Mobile onboarding could reject valid large legal documents, stay busy
after closing Android browser sign-in, and hide pairing-import errors
behind the community-link form. This change bounds join-policy responses
at 4 MiB while retaining 64 KiB for other responses, handles Android
browser cancellation through the native lifecycle/channel, keeps Cancel
sign-in usable, and shows friendly pairing errors on the landing screen
with a live-region announcement. Identity mismatch checks remain intact.

The browser-cancellation implementation incorporates the candidate from
#8847 (`cb241b3f1`); coordinate landing to avoid duplicate work. This PR
consolidates the three fixes exercised together during Android
onboarding acceptance.

## Validation

- Pixel 9 / Android 17, production hosted services, isolated debug
installs. Human acceptance plus native UI, saved public-identity and
restart checks as noted below. No iOS acceptance in this session.
- Latest build and invite-first acceptance: base
`a12ad1cdd29da8b2923eca5408e963a2659777ab` plus these patches.
- Focused tests on that base plus patches: **88 passed** across
hosted_journeys_test, hosted_admission_test, browser_auth_test,
pairing_hosted_handoff_test and pairing_provider_test, with
`BUZZ_AUTH_DOMAINS=communities.buzz.xyz`.
- Earlier baseline: 81 focused cases passed plus one
staging-configuration case passed separately (82 distinct cases across
seven onboarding/recovery files); these are historical, not current-head
certification.
- Earlier policy change: 41 focused tests, changed-file analysis and
isolated mutation check passed on the earlier base. Earlier browser
candidate native instrumentation/mutation evidence was not rerun on this
combined revision.
- Android debug APK built and installed successfully. Mandatory
commit/push hooks passed at `6442e5ff9`: analysis clean; mobile tests
4,047 passed / 34 skipped; additional package runs 4 and 27 passed;
file-size checks passed. These broad tests ran through the required push
hook, not a manually invoked suite. CI remains pending.

## Live testing report — October 31

| Journey | Result and evidence boundary |
|---|---|
| Fresh email signup / identity / hosted invite | Reproduced policy
response exceeding 64 KiB; after fix, admission and restart passed.
Profile/message visible locally; cross-account message receipt remains
unproven. Tested at `cfcaef4e9f` plus policy patch. |
| Browser close → retry → login → existing identity recovery → restart |
Passed at `d14f33a170` plus patches; recovered the expected public
identity and community. |
| Pairing a different identity into an existing install | Rejected
without replacing the original key. Initially hidden error became
visible with friendly copy; Back and restart preserved the community at
`b80217de3` plus patches. |
| Fresh pairing → wait for desktop approval → sign-in → community →
restart | Passed at `20742a236` plus patches; human confirmed approval
gate, saved public identity matched. |
| First-time desktop cancellation → welcome → fresh QR retry → community
→ restart | Passed at `20742a236` plus patches. Cancellation error
remained raw `user_denied`. |
| Android system Back while awaiting pairing approval | Human-confirmed
in already-onboarded Add Community; first-time phone-side Back variation
remains untested. |
| Wrong pairing code → rejection → correction → completion |
Human-confirmed at `a2540fbe3` plus patches. Exact error and
same-session versus fresh-QR retry were not independently captured. |
| Interrupt account onboarding at community picker → process restart →
recovery → admission | Passed at `a2540fbe3` plus patches. Restart
opened Add a community; Find my communities restored choices without
another login. Human completed admission. No destination had yet been
selected. |
| Invite-first into fresh signed-out app → intended community → restart
| Passed at `a12ad1cdd` plus patches; saved identity/destination
matched. Existing member and existing browser session. Initial Android
VIEW intent explicitly targeted the test package; ordinary HTTPS default
app-link resolution and new-member admission remain untested. |
| Malformed community input → error → Back → restart | Passed for `not a
community`; original community preserved. `not-a-community` is a valid
single-label hostname and was not counted as malformed-input evidence. |

## Remaining gaps and findings

Not release certification. Pairing landing-error regression/mutation
evidence is now recorded below. Current combined-revision native
instrumentation has not been rerun; its limited scope is described
below.

Deferred behavior, not implemented here:
- Wrong browser account after fresh pairing is correctly rejected, but
Retry reuses that app account session; in-app account switching must
preserve the transferred identity and destination. The live happy path
used a manual browser-account switch and fresh install.
- Pairing wait has no visible Cancel; tested system Back works.
- Desktop cancellation exposes raw error wording.
- Interrupted community selection requires an extra Find my communities
step.

Master checklist remains partial: seven categories exercised this
session, signup/community creation has historical coverage, seven
categories unexercised. New-member link-first admission, deeper
interruption/server-commit recovery, expiry/revocation/network failures,
key import, organization/self-hosted paths, phone-to-desktop transfer,
eligibility gates, accessibility/app-link variants and iOS require
separate coverage. Channel-discovery work is separate (#8869).

## Review checkpoint

[Carl’s
review](https://github.com/block/buzz/pull/8874#pullrequestreview-5724095754)
found no code blockers at `6442e5ff9`. Carl also reviewed test-only
follow-up `d43958653` and found no issues, accepting both validation
gaps as closed. A subsequent review identified stale callback → resume
cancelling a newer Android login. A narrow native fix and regression
validation are in progress; prior readiness attestation is withdrawn
pending this behavior change.

- **Android stack check passed (Pixel 9, Android 17):** after fresh
account sign-in, the human stopped at the community picker without
closing/restarting. `dumpsys activity activities` showed exactly one
MainActivity in Invite First task 567, with no CustomTab in that task or
the full component list. ChromeTabbedActivity remained in a separate
pre-existing browser task. This rules out a lingering duplicate activity
in this run; it does not independently trace `onNewIntent` or establish
all Android/browser variants. Binary production sources match
`6442e5ff9`.
- **Pairing regression/mutation passed:** extended the existing QR
journey using the real encrypted NIP-AB import and hosted coordinator.
Asserts visible friendly mismatch feedback, live-region wrapper,
unchanged stored community/account identity, and Back to home. Reused
the existing socket fake. Hosted journey + pairing provider files: 70
passed with configured auth domain; opt-out hosted journey file: 3
passed / 21 skipped; changed-file analysis clean. Isolated clone:
control passed, hiding the landing error failed the visible text
assertion, restoration passed. No production source change in this
follow-up.
- **Duplicate landing:** #8847 is superseded by this combined PR; its
Android slice is included here. No merge performed.

BrowserAuthPluginTest manually drives plugin hooks using an unmanaged
Activity and fake browser launcher. It proves the plugin state machine
only, not MainActivity wiring, real lifecycle order, process death, or
duplicate app_links callback delivery. Current CI does not run Android
instrumentation. Android ignores the debug ephemeral-login flag and
shares browser cookies.

Readiness checklist: agent review completed on production changes and
test follow-up; agent exercised the changed behavior; human completed
the documented Android journeys and final sign-in check.



## Stale callback follow-up (`b7aaaa788`)

Addresses [the later Android lifecycle
review](https://github.com/block/buzz/pull/8874#pullrequestreview-5724197312):
a recognized callback now clears browser-dismissal tracking before
rejecting a mismatched state. A stale callback cannot complete or cancel
the newer login. The existing native journey now includes the
intervening resume, successful current callback, and genuine browser
dismissal after a stale callback. Only two native files changed; policy
and pairing fixes are unchanged.

Validation: 88 focused Dart tests passed. Android app and test APK build
passed. On Pixel 9, the native plugin journey passed; in an isolated
source/Git/build clone, removing the reset failed at the newer attempt's
expected-zero-replies assertion; exact restoration passed. This proves
the plugin state machine on Android, not a real late browser callback
through OS lifecycle delivery. Carl reviewed `b7aaaa788` and found the
fix correct and minimal with no blockers. Human browser-close/retry
check remains pending; PR stays draft until that passes. Current-head CI
is also required for merge.

Accepted limitation: if a recognized stale callback arrives after the
current browser tab has already gone, automatic dismissal is suppressed
and the user may need the visible Cancel button. The callback cannot
complete sign-in without matching state; Dart validation remains
authoritative.

---------

Signed-off-by: Wes <wesbillman@users.noreply.github.com>
Co-authored-by: Brain <1a02c72794dcd0f07058a353bc3a81f4028b8c77c92c87fce6d5c8b85970a20b@buzz.block.builderlab.xyz>
2026-10-31 12:43:01 -06:00
Wes
b6aa5539e3 feat(mobile): account onboarding, key recovery and hosted reconnect (#8375)
## Behavior

Adds optional mobile Builderlab sign-in, identity backup/recovery,
community discovery/creation, and account-aware reconnect. **Builderlab
features are disabled by default:** when `BUZZ_AUTH_DOMAINS` is unset or
empty, account login, creation, backup/recovery, reconnect prompts, and
background account restoration are hidden/disabled. QR/code pairing,
links, and invites retain Nostr-only entry. Saved account state is
retained for later opt-in.


`--dart-define=BUZZ_AUTH_DOMAINS=communities.buzz.xyz,communities.public.builderlabstaging.xyz`
opts those DNS domains and their subdomains into required account setup.
The same policy gates pairing, deep links, durable community admission,
and reconnect. A nonempty list enables Builderlab features;
`BUZZ_BUILDERLAB_URL` alone does not. Enabled flows still require their
backend services. Existing Nostr relay authentication remains mandatory.

`BUZZ_HOSTED_RELAY_AUTH=true` enables scoped relay assertions and
reconnect prompts only for configured authentication domains. Configure
assertion issuance and each community's issuer binding before enabling
assertions; enable relay enforcement last. Account credentials stay at
Builderlab. Wrong-account recovery preserves keys; failed writes are not
replayed; authentication is bounded by request deadlines.

Hosted flows preserve keys across cancellation/restart, reconcile
interrupted creation/invitation acceptance, and support manual nsec file
import/export. Account identities are scoped to backend and
authenticated subject; reusing an existing local key for an unbound
account requires an explicit selection. Recovery reconciles the
advertised and recovered inventories before automatic selection.
Successful self-hosted admission retires its pending key, and iOS
startup removes interrupted export files. Adds authenticated relay `GET
/operator/communities/joined` for the companion Builderlab membership
endpoint.

## Validation

- Follow-up review repair at `66a12ac92`: self-hosted entry presents
readable choices and import despite incomplete enumeration, while
generation still requires a complete empty inventory; explicit selection
uses exact-key lookup. Consuming a value-equal duplicate now advances
dispatch. Reconnect requires an existing account binding or a
subject-scoped backup receipt before signing an assertion, and pins the
subject inside the serialized account request. An empty different
account is refused without sending key proof. Focused checks: configured
domains 58 passed; default 49 passed, 9 hosted-only skips. Separate
isolated mutations fail the incomplete-inventory sheet, exact-key reuse,
duplicate dispatch and reconnect journeys (including an
empty-account-only bypass); restored controls pass. Evidence uses
synthetic storage/network boundaries, not physical Android or live
backend association. All mandatory commit/push hooks passed; fresh
GitHub CI is pending.

- Bounded review repair at `d3cc0003f`: incomplete secure-storage
enumeration now blocks automatic identity generation while explicit
known-key reads retain their fallback; declined/failed onboarding links
release the queue; HTTP 429/5xx keeps Retry regardless of response
encoding. Default app-gate coverage exercises a bind link followed by
ordinary community entry. Focused checks: configured domains 47 passed;
default 38 passed, 9 hosted-only skips. Removing the three production
fixes in an isolated source/Git/build copy fails the
identity-resolution, declined/failed queue, and Retry journey
assertions; clean and restored controls pass. Storage and HTTP failures
are synthetic; physical Android and live outage behavior were not
exercised. Published after all mandatory commit/push hooks passed
(mobile analysis/tests, branch-skew and file-size gates); fresh GitHub
CI remains pending.

- Existing whole-PR source review cleared the reconnect defects at
`fb15d5b82`.
- Domain-policy increment: focused environment, entry, app-gate, pairing
and onboarding journeys pass with empty and configured domains. Existing
pairing provider/page tests pass. Changed Dart files analyze cleanly.
- Isolated source/Git/build mutation: forcing paired credentials through
hosted login fails the default-build journey; clean and restored
controls pass. CI now runs configured-domain journeys in addition to the
default-build suite.
- Integrated main through `5b433d929` at `0067c069c`, including its
pinned Flutter upgrade. Preserved the PR welcome UI with the updated
transition API and added Material surfaces around onboarding
selection/consent rows. Focused post-merge runs pass in both
configurations; all mandatory local push gates passed (mobile
analysis/tests, Rust tests, desktop-native checks, branch-skew and
file-size checks).

- Merge-review repair at `a315bce11`: focused identity/storage/admission
and widget journeys pass, including account switching with an empty or
already-bound second account, explicit reuse, and self-hosted
removal/rejoin with another key. Default-domain journeys pass too
(hosted-only cases intentionally skip there).
- Isolated source/Git/build mutation checks: bypassing account scoping,
reuse consent, pending-key retirement, or recovery inventory
reconciliation fails the relevant journey/invariant assertions; clean
and restored controls pass.
- Native `RunnerTests/IdentityFilePluginTests`: both tests pass on the
iPhone 18 Pro iOS 27 simulator with an isolated app identifier. At
`24a0dcaac`, the picker journey seeds residue in Library/Caches,
matching path_provider_foundation, and verifies plugin startup removes
it while preserving an unrelated file. The earlier tmp-only fixture did
not exercise the actual export location. This is synthetic native
cleanup/picker evidence, not a real terminated-share or live account
round trip.

- Follow-up: Caches and tmp cleanup; fallback to individually known
identity slots when Android bulk enumeration fails; explicit replacement
of a refused self-hosted key preserves its original before swapping the
retry slot. Configured-domain journeys/invariants: 34 passed; default:
31 passed, 3 hosted-only skips. Isolated enumeration/retry mutations
fail with passing controls. Bulk-read fallback preserves but cannot
enumerate arbitrary other-account slots until bulk reads recover.

- Configured-domain CI exposed a stale pairing-status assertion after
account scoping. The repaired test checks the admission mismatch,
preserved account/transfer keys, and no admitted community. The
configured-domain CI selection passes locally (56 tests); removing the
production mismatch guard fails the updated test, with clean/restored
controls passing. This is synthetic coordinator evidence, not physical
QR acceptance.

- Final review repair (`40e1e6101`): native iOS export creation uses
atomic complete file protection; normal and restart cleanup remain.
Account/policy/claim HTTP uses one 30-second total deadline with request
abort and body cancellation. Removed the unrelated NIP-FA spec edit.
- Focused account/admission/export tests: 25 pass; configured-domain
account/admission/onboarding journeys: 33 pass. Isolated deadline and
native-dispatch mutations fail, with passing clean/restored controls.
Native export/picker tests: 2 pass on iOS 27 simulator. The real
file-protection attribute assertion is physical-device-only because
simulator provides no Data Protection attribute; locked-device
protection and interrupted real sharing have not been observed.

- Opt-in UI: configured-domain CI selection passes (57 tests); default
selection passes (7 tests, 10 hosted-only skips); URL-only plus
whitespace/empty domains passes (6 tests, 9 hosted-only skips). Changed
Dart files analyze cleanly. Independent mutations that unconditionally
initialize the coordinator in the app gate, welcome entry, or link form
fail the default journey; clean/restored controls pass.
- Native welcome screens exercised on iPhone 18 Pro / iOS 27 simulator
in default and configured builds: default exposes community link / QR /
pairing code only; configured build additionally exposes Builderlab
connection and community creation. No live hosted login was exercised in
this check.

- Delivery at `e48fe73a9`: all mandatory push hooks passed (full mobile
analysis/tests, Rust tests, desktop-native checks, branch and file-size
checks). GitHub checks had not yet populated at the immediate post-push
snapshot.

## Review disposition

| Feedback | Disposition |
| --- | --- |
| Explicit self-hosted entry under unreadable inventory, duplicate
invite dispatch, reconnect cross-account binding
([entry](https://github.com/block/buzz/pull/8375#discussion_r4318421622),
[queue](https://github.com/block/buzz/pull/8375#discussion_r4318421640),
[reconnect](https://github.com/block/buzz/pull/8375#discussion_r4318455512))
| Repaired at `66a12ac92`; evidence above. Reconnect refuses unproven
ownership rather than silently establishing a binding. |
| Incomplete Android identity inventory, stranded deep-link queue,
transient HTTP retry classification
([review](https://github.com/block/buzz/pull/8375#pullrequestreview-5576864143))
| All three repaired in `d3cc0003f`; focused journeys and isolated
mutation evidence above. |
| Account cross-link, incomplete recovery inventory, committed invite
checkpoint, pending local key retirement/replacement | Repaired in the
preceding commits; journey and mutation evidence above. |
| iOS interrupted key export
([review](https://github.com/block/buzz/pull/8375#pullrequestreview-5575253252))
| Native cleanup plus complete protection at creation implemented.
Physical-device lock and real interrupted sharing acceptance remains
pending. |
| Trickle responses bypass idle timeout; unrelated NIP-FA edit
([review](https://github.com/block/buzz/pull/8375#pullrequestreview-5575764556))
| Total request deadline/abort implemented; spec edit removed. |
| Production domains rejected | Ordinary entry now needs no Builderlab
configuration. Opt-in account-required domains must still use supported
community mappings. |
| Lost Android Keystore recovery | Backup exclusions prevent the
reviewed stale-restore scenario; genuine key loss still has no in-app
recovery/reset and remains deferred. |
| Native secp256k1 dependency question | Obsolete against the current
base: upstream C integration landed in #8398; no package diff remains
here. |
| Operator membership endpoint contract | Documentation now states the
operator chooses the pubkey; no end-user session binding is implied.
Additional handler-level coverage is optional follow-up. |
| Optional Android partial document cleanup/activity retention; local
work after backup cancellation | Follow-up hardening, not claimed
implemented. Cancellation prevents remote backup upload. |
| Semgrep crypto inventory notices | Informational inventory, not
demonstrated defects. |

## Remaining draft gates

Native QR/browser-return acceptance remains unverified for this
revision. Optional Builderlab onboarding still needs backend
backup-status and joined-community routes, recovery
policy/configuration, and real backup/recovery/reconnect acceptance. The
empty-domain build removes these services as prerequisites for ordinary
pairing; it does not make the optional hosted flows backend-ready. Human
acceptance and current CI are still required before merge.



Review dispositions retained: production auth-domain configuration must
use supported community mappings; enabling `builderlab.xyz` does not add
support for `buzz.block.builderlab.xyz`. Recovery after genuinely losing
an Android Keystore key remains a follow-up, not a newly implemented
capability.


Human acceptance steps: build once without `BUZZ_AUTH_DOMAINS`
(including with a previously saved account) and confirm no Builderlab
controls/restoration while ordinary link and QR/code entry work. Build
with supported domains and confirm connection/creation appear; exercise
browser return and live backup/recovery/reconnect. On physical iOS,
exercise export and interrupted sharing/locked-device protection. Record
results before marking review complete.

---------

Signed-off-by: Wes <wesbillman@users.noreply.github.com>
Co-authored-by: Brain <1a02c72794dcd0f07058a353bc3a81f4028b8c77c92c87fce6d5c8b85970a20b@buzz.block.builderlab.xyz>
Co-authored-by: Brain <1a02c72794dcd0f07058a353bc3a81f4028b8c77c92c87fce6d5c8b85970a20b@wes.communities.public.builderlabstaging.xyz>
2026-10-19 15:46:58 -06:00