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Phase 13 of purgatory-sync-redesign:
- Add sync loop startup in main.rs (RealSyncContext + ThrottleManager + start_sync_loop)
- Update add_state() and add_pr() to automatically enqueue for background sync
- Remove start_state_sync() call from state.rs (now handled by sync loop)
- Remove orphaned legacy functions: sync_state_git_data, fetch_missing_oids_from_server,
get_most_complete_local_repo, identify_missing_oids, get_date_of_most_recent_commit_on_default_branch
- Clean up unused imports in purgatory/mod.rs
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Implement the production SyncContext that connects to real systems:
- RealSyncContext struct holding purgatory, database, git_data_path,
our_domain, and local_relay references
- fetch_repository_data: delegates to git::authorization module
- collect_needed_oids: collects commit hashes from state events
(branches/tags) and PR events (c-tag) in purgatory
- oid_exists: delegates to git::oid_exists function
- fetch_oids: uses git fetch --depth=1 to retrieve specific OIDs
from remote servers, running in spawn_blocking for async safety
- process_newly_available_git_data: delegates to the unified function
in git::sync module for consistent post-git-data processing
- has_pending_events: delegates to purgatory method
- find_target_repo: finds first existing owner repository on disk
- our_domain: returns configured domain for clone URL filtering
This enables the purgatory sync loop to use real database queries,
git operations, and event processing instead of mocks.
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- Remove duplicate AlignmentResult struct from nostr/policy/state.rs
- Remove duplicate align_repository_with_state method from StatePolicy
- Import and use the canonical implementation from git::sync
- Re-export AlignmentResult from git::sync in policy/mod.rs
The git::sync version is preferred as it:
- Handles symbolic refs (ref:) properly by skipping them
- Uses git::oid_exists which is more general than git::commit_exists
- Has a cleaner iteration pattern (delete first, then update/create)
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this is now handled through process_newly_available_git_data
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Replace ~100 lines of duplicated post-push processing in handle_receive_pack
with a single call to the unified process_newly_available_git_data function.
The unified function handles all post-git-data-available processing:
- Discovering satisfiable events from purgatory (state and PR events)
- Syncing OIDs to authorized owner repos
- Aligning refs (+ setting HEAD) in all owner repos
- Saving events to database
- Notifying WebSocket subscribers
- Removing from purgatory
This ensures consistent behavior regardless of how git data arrives
(git push vs purgatory sync fetching from remote servers).
Also mark test-only internal methods with #[cfg(test)] to silence
dead code warnings.
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Implement the unified function that handles all post-git-data-available
processing, regardless of how data arrived (git push or purgatory sync).
This function:
- Discovers satisfiable events from purgatory (state and PR events)
- Syncs OIDs to authorized owner repos
- Aligns refs and sets HEAD
- Saves events to database
- Notifies WebSocket subscribers
- Removes from purgatory
New additions:
- ProcessResult struct for tracking processing outcomes
- process_newly_available_git_data async function in src/git/sync.rs
- Helper functions: extract_identifier_from_repo_path, extract_identifier_from_pr_event
- Purgatory::find_prs_for_identifier method for PR event discovery
- Unit tests for all helper functions
Also fixes:
- Simplified extract_domain to avoid url crate dependency
- Removed unused imports in sync/loop.rs
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Implement the main sync loop that runs in the background and processes
identifiers that are ready for git data synchronization:
- Runs every 1 second (hardcoded interval, not configurable)
- Finds all ready identifiers where !in_progress && next_attempt <= now
- Spawns parallel tasks for each ready identifier
- Each task calls sync_identifier to try fetching git data from remotes
- Applies backoff when sync completes but events remain in purgatory
- Removes identifiers from queue when sync completes or no events remain
The loop integrates with the existing sync infrastructure:
- Uses SyncContext trait for testability
- Uses ThrottleManager for domain-based rate limiting
- Uses sync_identifier for the actual fetch orchestration
This enables automatic background fetching of git data for events in
purgatory, complementing the existing push-triggered sync path.
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- Add sync_queue field to Purgatory struct for tracking identifiers that need
background git data fetching
- Implement enqueue_sync() with debouncing - resets attempt_count and updates
next_attempt when new events arrive for an identifier already in queue
- Add enqueue_sync_default() for user-submitted events (3 minute delay to wait
for git push)
- Add enqueue_sync_immediate() for sync-triggered events (500ms delay for
batching burst arrivals)
- Implement has_pending_events() to check if an identifier has state events
or PR events in purgatory
- Add helper methods: sync_queue(), remove_from_sync_queue(), sync_queue_size()
- Add unit tests for debouncing behavior and pending event detection
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Implement the main sync orchestration function and trigger-based queue
processing for throttled domains:
sync_identifier function:
- Orchestrates syncing git data for a single identifier
- Tries all non-throttled URLs in sequence
- Checks completion after each fetch (no pending events or all OIDs fetched)
- Enqueues with throttled domains when non-throttled URLs are exhausted
- Returns true if complete, false if events remain (for backoff)
ThrottleManager enhancements:
- Add set_context() to provide SyncContext for queue processing
- Add try_process_next() to spawn tasks when capacity frees
- Add process_queued_identifier() to handle queued work
- Update complete_request() to trigger processing on completion
- Update enqueue_identifier() to trigger processing when capacity available
- Add internal methods for non-Arc testing compatibility
Generic function updates:
- Add ?Sized bound to sync_identifier_next_url, sync_identifier_from_url,
sync_identifier, and get_throttled_domains_with_untried_urls for
dynamic dispatch support (Arc<dyn SyncContext>)
Tests:
- sync_identifier_tries_multiple_urls_until_complete: verifies sequential
URL fetching until all OIDs are available
- sync_identifier_enqueues_throttled_domains_when_incomplete: verifies
throttled domains get the identifier enqueued for later processing
- has_queued_work_reflects_queue_state: verifies queue state tracking
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Implement sync_identifier_next_url and sync_identifier_from_url functions
that provide the core URL selection and fetch logic for purgatory sync.
sync_identifier_next_url:
- Pure URL selection logic with no side effects
- Filters out our own domain and already-tried URLs
- Respects domain throttling when domain parameter is None
- Can target a specific domain when domain parameter is Some
sync_identifier_from_url:
- Fetches OIDs from a specific URL via the SyncContext
- Tracks request start/completion with ThrottleManager for rate limiting
- Calls process_newly_available_git_data on successful fetch
Also adds get_throttled_domains_with_untried_urls helper for the main
sync loop to know which DomainThrottle queues to enqueue identifiers to.
These functions are designed to be called by both:
- Main sync loop (tries non-throttled URLs immediately)
- DomainThrottle queue processing (when capacity frees up)
Includes 10 unit tests covering:
- Throttled domain skipping
- Tried URL skipping
- Our domain filtering
- Specific domain targeting
- Fetch success/failure handling
- Throttle request tracking
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Implement the abstraction layer for purgatory sync operations:
- SyncContext trait: defines interface for repository data fetching,
OID existence checks, git fetch operations, and event processing
- ProcessResult: captures outcomes when releasing events from purgatory
- MockSyncContext: test mock with builder pattern for configuring:
- Clone URLs and which OIDs each URL provides
- Needed OIDs (simulates purgatory state)
- URL failure simulation
- Fetch logging for assertions
The trait uses async_trait for async method support and requires
Send + Sync for use in concurrent sync operations.
This abstraction enables unit testing of sync logic without I/O,
while the real implementation (to be added later) will connect
to actual database, git, and relay systems.
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Implements ThrottleManager which manages all per-domain DomainThrottle
instances and provides:
- Throttle status checking via is_throttled() for sync URL selection
- Request tracking via start_request()/complete_request()
- Identifier queue management via enqueue_identifier()
- Automatic domain throttle creation on first access
- Thread-safe access via DashMap with Mutex-wrapped throttles
The manager uses the configured max_concurrent and max_per_minute limits
for all domains. Trigger-based queue processing (set_context,
process_queued_identifier) will be added after SyncContext is available.
Tests verify:
- is_throttled reflects domain capacity correctly
- enqueue_identifier creates domain throttle if needed
- start_request creates domain throttle if needed
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Implement per-domain throttling for purgatory sync operations:
- Concurrent request limit (max in-flight requests per domain)
- Rate limit (max requests per minute via sliding window)
- Fair round-robin queue processing across identifiers
- In-progress tracking to prevent duplicate fetches
- Tried URL tracking per identifier
Add indexmap dependency for ordered iteration in round-robin queue.
Includes 6 unit tests covering:
- Concurrent limit enforcement
- Rate limit enforcement (sliding window)
- Round-robin fair processing
- In-progress identifier skipping
- Round-robin index adjustment on removal
- Tried URL merging on re-enqueue
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Implement the sync queue entry struct that tracks sync state per identifier:
- next_attempt: when the next sync should be attempted
- attempt_count: for backoff calculation (resets on new events)
- in_progress: prevents concurrent syncs for same identifier
Backoff schedule: 20s → 40s → 80s → 120s (capped at 2 minutes)
This is the foundation for the identifier-based purgatory sync system
that will replace the current per-event syncing approach.
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When a push to refs/nostr/<event-id> is received (PR data), the git data
is now synced to all other owner repositories that share maintainers with
the source owner. This mirrors the behavior added for state event data.
Changes:
- Add sync_pr_refs_to_owner_repos() function in git/sync.rs
- Add PrSyncResult struct to track sync statistics
- Add copy_single_commit_between_repos() helper function
- Call PR sync in handle_receive_pack after successful push
- Add unit test for PrSyncResult default values
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don't save new events destined for purgatory events directly to db
or serve on websockets
don't download events already in purgatory via negentropy sync
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so we can more easily support grasp purgatory feature
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Add automatic pagination support for non-Negentropy historic sync to handle
large result sets efficiently. When a subscription receives >= 75 events,
the system automatically fetches the next page using the 'until' parameter.
Changes:
- Add PaginationState struct to track event counts and min timestamps
- Add pagination_state HashMap to PendingBatch for per-subscription tracking
- Add PAGINATION_THRESHOLD constant (75 events)
- Pass pending_sync_index to event processor for state updates
- Track events and timestamps as they arrive
- Check threshold on EOSE and launch follow-up subscriptions
- Initialize pagination state when creating historic sync subscriptions
- Update test fixtures in algorithms.rs
The pagination continues recursively until a page returns fewer than 75 events,
ensuring complete historic data retrieval without overwhelming relay limits.
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Replace broken event counting that occurred before duplicate/policy checks
with accurate tracking of events that are new, accepted, and saved.
Changes:
- Added ProcessResult enum to track event processing outcomes
- Modified process_event_static() to return ProcessResult
- Replaced events_total (with source labels) with events_synced_total
- Removed gap_events_total and event_source module
- Removed eose_received flag (EOSE is per-subscription, not suitable)
- Updated all tests to use new simplified API
The new ngit_sync_events_synced_total metric only counts events that:
1. Are new (not duplicates)
2. Pass write policy validation
3. Are successfully saved to database
All 165 tests pass (124 lib + 41 integration)
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Separated connection from subscription logic. The RelayConnection.connect()
method now only handles WebSocket connection establishment. Subscriptions
are managed separately via handle_connect_or_reconnect.
Changes:
- Renamed RelayConnection::connect_and_subscribe() to connect()
- Removed subscription logic from connect method
- Updated call site in try_connect_relay()
- Removed unused build_announcement_filter import
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Bug: handle_connect_or_reconnect() was incorrectly calling quick_reconnect()
on first connections instead of fresh_start().
Root cause: The code updated last_connected = Some(now) at line 808, then
immediately read it back at line 932 to make the reconnection decision.
This meant first connections saw elapsed = now - now = 0 seconds, which
triggered quick_reconnect() instead of fresh_start().
Fix: Capture old_last_connected BEFORE updating the state, then use that
value for the reconnection decision. Now first connections correctly see
None and call fresh_start().
Impact:
- First connections now properly use fresh_start() with full historic sync
- Short disconnections (< 15 min) use quick_reconnect() with since filter
- Long disconnections (> 15 min) use fresh_start() with full resync
All 41 sync tests passing.
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The system was incorrectly treating subscription-specific CLOSED messages
as connection-wide disconnects, causing live subscriptions to be terminated
immediately after historic_sync completed.
Two bugs fixed:
1. relay_connection.rs: Removed break on RelayMessage::Closed - it's
subscription-specific, not connection-wide
2. mod.rs: Removed disconnect handling for RelayEvent::Closed - only log
at DEBUG level and continue
All 41 sync tests now pass including previously failing live sync tests.
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The log message claimed 'will fall back to REQ+EOSE' but no such
fallback was implemented - the function simply returns 0 and exits.
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When negentropy (NIP-77) sync was enabled, the RelaySyncIndex was never
updated to reflect historical sync completion. This caused the three-way
diff algorithm in compute_actions() to malfunction, leading to:
- Repeated sync attempts for the same items
- Incorrect filter counting for consolidation
- Potential premature relay disconnection
This fix unifies both sync paths (REQ+EOSE and Negentropy) through a
consistent PendingBatch flow:
1. Added SyncMethod enum to distinguish between sync types
2. Updated PendingBatch struct to include sync_method field
3. Extracted confirm_batch() method for unified batch confirmation
4. Modified negentropy_sync_and_process() to:
- Create a PendingBatch before sync
- Add batch to pending_sync_index
- On success: Remove batch and call confirm_batch()
- On failure: Remove batch without confirming
The confirm_batch() method moves repos and root_events from the batch
to the RelayState.repos and RelayState.root_events, ensuring the
three-way diff works correctly regardless of sync method.
Closes: negentropy-sync-state-tracking.md
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they are legacy and not root events
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Main lib (src/):
- Add #[allow(dead_code)] for build_info field (stored to prevent Prometheus unregistration)
- Add #[allow(dead_code)] for first_seen field (reserved for future rate limiting)
- Replace .or_insert_with(RelaySyncNeeds::default) with .or_default()
- Replace manual div_ceil implementations with .div_ceil(100)
Test code (tests/):
- Replace .expect(&format!(...)) with .unwrap_or_else(|_| panic!(...))
- Remove needless borrows in fetch_metrics() calls
- Add #[allow(dead_code)] and #[allow(unused_imports)] to test helpers module
grasp-audit:
- Apply cargo fmt to fix formatting
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Replace EOSE-based sync completion with negentropy reconciliation for:
- Initial connect (fresh sync)
- Daily sync (Layer 1 announcements)
- Stale reconnect (>15 min)
Key changes:
- Add NegentropySyncResult struct with remote_only, local_only, received fields
- Add supports_negentropy() using try-and-fallback approach
- Add negentropy_sync_filter() using nostr-sdk client.sync() API
- Modify handle_connect_or_reconnect() to use negentropy for fresh/stale sync
- Modify daily_sync() to use negentropy for Layer 1
- Single-warning logging per relay when negentropy fails
Quick reconnects (<15 min) unchanged - still use REQ with since filter.
If negentropy unsupported, gracefully falls back to REQ+EOSE flow.
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- Add Layer 1 (announcements) re-subscription in daily_sync() after
unsubscribe_all() to ensure kinds 30617+30618 are re-established
- Clarify comments in handle_connect_or_reconnect() explaining that
Layer 1 subscription is established during connect_and_subscribe()
Addresses implementation gaps from design vs implementation report:
- Gap 1: Comments clarified (Layer 1 handled by connect_and_subscribe)
- Gap 2: daily_sync() now re-subscribes to Layer 1 without since filter
- Gap 3: consolidate() already had Layer 1 re-subscription (no change)
All 125 unit tests and integration tests pass.
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Remove 4 config fields that were defined but never used:
- sync_startup_delay_secs
- sync_reconnect_delay_secs
- sync_reconnect_lookback_days
- sync_startup_jitter_ms
These fields were added during GRASP-02 planning but the implementation
took a different approach (using hardcoded constants for quick reconnect
windows and batch window via env var).
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Previously, events were classified as 'startup' or 'live' based on whether
they came from a bootstrap relay (is_bootstrap flag). This meant ALL events
from bootstrap relays were counted as 'startup', even events received after
the initial sync completed.
Now events are classified based on whether EOSE (End Of Stored Events) has
been received for that connection:
- Events BEFORE EOSE → 'startup' (historical events during initial sync)
- Events AFTER EOSE → 'live' (new events via real-time subscription)
This enables the test_live_sync_event_count test which validates that events
received after sync connection is established are counted as live events.
Also removed the #[ignore] attribute from test_live_sync_event_count since
the metrics are now properly wired up.
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nostr-sdk 0.44's Relay::new() is pub(crate), making it impossible to
construct a Relay directly from outside the crate. Relays can only be
created through Client::add_relay() or RelayPool::add_relay().
This commit:
- Adds 'Why Client instead of Relay directly?' section to struct docs
- Updates run_event_loop() docs to explain the API constraint
- Removes outdated 'Future Refactoring' suggestion (not feasible)
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Replace the 1-second polling loop with nostr-sdk's relay-level notification
system that provides immediate disconnect detection via RelayNotification::RelayStatus.
Key changes:
- Use relay.notifications() instead of client.notifications()
- Handle RelayNotification::RelayStatus { Disconnected | Terminated } to detect
connection loss immediately without polling
- Remove tokio::select! with interval timer - now uses simple match loop
- Handle additional notification types (Authenticated, AuthenticationFailed)
Why this is better:
- Event-driven vs polling: no wasted CPU cycles checking every second
- Immediate detection: disconnect triggers notification instantly
- Uses nostr-sdk's built-in mechanism that was previously inaccessible at pool level
(RelayStatus notifications are filtered out in RelayPoolNotification)
Technical note: RelayNotification::RelayStatus is only available via
Relay::notifications(), not Client::notifications(), because the pool-level
broadcast filters out status change events.
Future refactoring opportunity: Consider restructuring RelayConnection to hold
a Relay directly instead of wrapping a Client, since we only manage one relay
per connection anyway.
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- Add periodic health check in RelayConnection::run_event_loop that polls
nostr-sdk's relay.is_connected() every second to detect dead connections
- When event channel closes without explicit Closed/Shutdown, send
DisconnectNotification to SyncManager (fixes case where TCP drops silently)
- Enable test_relay_connected_status test which validates the
ngit_sync_relay_connected metric correctly reflects connection state
The issue was that when a remote relay stops abruptly, nostr-sdk's
notification receiver blocks indefinitely waiting for data. TCP disconnect
detection without keepalive can take minutes. The health check polls
nostr-sdk's internal relay status which detects disconnection promptly.
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Root cause: Both Metrics::new() and SyncManager::new() were trying to register
SyncMetrics with the same Prometheus registry. The second registration failed
silently, leaving SyncManager.metrics = None, so record_connection_attempt()
calls were no-ops.
Changes:
- SyncManager::new() now accepts Option<SyncMetrics> instead of Option<&Registry>
- main.rs passes already-registered sync metrics from Metrics to SyncManager
- Simplified test_connection_failure_increments_counter assertion
- Marked 3 tests as #[ignore] pending relay tracking metrics wiring
Tests fixed:
- test_connection_failure_increments_counter (now counts failures)
- test_health_state_degrades_on_failure (now tracks health state)
- test_live_sync_layer3_events (already working, confirmed)
Tests ignored (future work):
- test_live_sync_event_count
- test_multi_source_aggregate_counts
- test_relay_connected_status
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Changes:
- Fix connection attempt metrics: record success/failure based on actual
connection result instead of pre-emptively recording failure
- Add health tracker integration on connection failure: call
record_failure() and record_health_state() in error path
- Add connection verification in relay_connection.rs: wait 500ms after
connect() then verify is_connected() to detect silent failures
- Add configurable disconnect check interval via
NGIT_SYNC_DISCONNECT_CHECK_INTERVAL_SECS env var
- Update TestRelay with fast test settings: startup_delay=0, jitter=0,
disconnect_check_interval=1s
- Add debug output to metrics tests for investigation
Note: Tests may still fail due to 5-second base backoff in health tracker.
A follow-up task will add NGIT_SYNC_BASE_BACKOFF_SECS config parameter
to allow faster test cycles.
Related: metrics-wiring-plan.md Tasks 1 & 2
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When root events (issues/patches) are received via self-subscription,
handle_root_event() was only updating the repo_sync_index directly.
This caused process_batch() to early-return when pending.is_empty(),
so Layer 3 filters for comments/replies were never created.
The fix adds root events to both:
1. repo_sync_index (for immediate availability)
2. pending queue (to trigger Layer 3 filter creation in next batch)
Critical: The pending entry must include relays from repo_sync_index
so derive_relay_targets() knows where to send Layer 3 subscriptions.
The Layer 3 test now verifies that events sent BEFORE the subscription
is established are still synced - proving subscriptions without 'since'
correctly fetch historical events.
Enabled 4 previously ignored Layer 3 tests:
- test_live_sync_layer3_events
- test_layer3_sync_with_lowercase_e_tag
- test_layer3_sync_with_uppercase_e_tag
- test_layer3_sync_with_q_tag
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Enable recursive relay discovery by broadcasting synced events to
WebSocket subscribers via LocalRelay.notify_event(). This allows the
SelfSubscriber to receive 30617 announcements synced from external
relays and discover additional relay URLs to connect to.
Changes:
- Pass LocalRelay to SyncManager::new() from main.rs
- Add local_relay field to SyncManager struct
- Call notify_event() after saving synced events to database
- Enable test_recursive_relay_discovery_syncs_announcement test
The test verifies that when relay_a syncs announcement_x from bootstrap
relay_b (which lists relay_c), relay_a discovers and connects to
relay_c to sync announcement_y.
Fixes recursive relay discovery from bootstrap sync.
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- Add SyncMetrics with full Prometheus integration
- Track sync gaps via catchup events
- Update Grafana dashboard with sync panels
- Document all sync configuration options
- Update design doc with implementation notes
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