* feat(analytics): session-level $exception dedupe in before_send
A runaway client error (a render loop, a polling fetch that keeps
throwing) emits 100+ identical $exception events per session, which
showed up as a top PostHog cost/noise source after exception
autocapture landed (MUL-3331 / MUL-3330).
Add a per-tab-session fuse in before_send, after redaction: fingerprint
the already-redacted exception (type + redacted value + one deterministic
stack frame incl. colno), keep the first 3 per (session, fingerprint),
drop the rest. State lives in sessionStorage as a hash->count blob, so no
PII is persisted. Every storage failure fails open (keep the event);
before_send never throws.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Co-authored-by: multica-agent <github@multica.ai>
* feat(diagnostics): global 60s cooldown for client_unresponsive
A single sustained freeze is delivered as several long-task entries, so
emitting per entry made client_unresponsive volume grow without bound
with the freeze length (MUL-3331). Cap it with a module-level (page-
lifetime) global cooldown: at most one event per 60s window. No route
bucketing — a global window is the most direct cap on volume.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Co-authored-by: multica-agent <github@multica.ai>
* test(analytics): add exception-dedupe safety matrix
This file was written alongside the dedupe implementation but missed the
original commit, so the $exception fail-open / cap / fingerprint matrix
never landed on the branch. No implementation change — the tests pass as
written against the existing exception-dedupe.ts.
Covers: first-3-then-drop, fingerprint independence, colno discrimination,
hash-only storage (no PII), degraded/missing frames, undefined / throwing
/ corrupt-JSON sessionStorage fail-open, setItem-failure under-counts, and
the distinct-fingerprint cap (51st new fingerprint kept).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Co-authored-by: multica-agent <github@multica.ai>
---------
Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
Co-authored-by: multica-agent <github@multica.ai>
* feat(analytics): capture JS exceptions to PostHog
Turn on posthog-js exception autocapture (window.onerror + unhandled
rejections, with stack) and add a buffered captureException() wrapper for
boundary-caught React errors those handlers can't see. Wire the web
route-level global-error boundary to report through it.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
* feat(diagnostics): add shared freeze watchdog
Long-task observer (>=2s) emits client_unresponsive via captureEvent;
client_type super-property tags desktop vs web for free. Installed once in
CoreProvider so web and desktop share one in-thread, SSR-safe detector for
recoverable freezes.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
* feat(desktop): report true hangs and crashes via breadcrumb
A real hang or crashed renderer can't report itself. The main process now
persists a breadcrumb on unresponsive / render-process-gone, and the next
renderer boot flushes it to PostHog (client_unresponsive / client_crash).
A recovered hang clears its breadcrumb so it isn't double-counted by the
in-thread watchdog.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
* feat(analytics): scrub PII from $exception before send
Error messages can interpolate user input (typed values, URLs with tokens).
Add a before_send hook that redacts emails, URL query strings, and long
opaque tokens from the exception message and $exception_list values, keeping
type + stack frames (code locations, not user data). Addresses the privacy
gap from leaving capture_exceptions on with no sanitizer.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
* test: cover breadcrumb state machine and freeze watchdog
The breadcrumb persist/clear orchestration is the correctness-critical part
and was untested. Cover: hang->write, recover->clear (no double-count),
recover-before-delay->no-op, force-quit->retained, crash->write-and-never-
clear, clean-exit->no-write. Add watchdog tests (threshold, idempotent,
SSR/PerformanceObserver no-op) via a fake observer.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
* fix(desktop): breadcrumb field precedence + document limits
Spread the persisted context FIRST so explicit event fields (source,
recovered) always win over a future colliding context key. Document why
preload-error skips the breadcrumb and the single-slot last-write-wins
undercount limitation.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
---------
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
capturePageview now section-normalizes the path (strip query/hash, collapse
UUID and issue-key resource segments) and dedupes consecutive same-section
views, so navigating between issues/agents/etc. no longer fires a billed
PostHog event per resource. The web tracker keys on pathname only (not
searchParams), removing ~17% pure query-string-churn pageviews and keeping
OAuth code/state out of $current_url.
MUL-3081
Co-authored-by: J <j@multica.ai>
Co-authored-by: multica-agent <github@multica.ai>
* feat(analytics): client_type super-property + Desktop $pageview (MUL-1253)
Register a `client_type` super-property ("desktop" | "web") plus optional
`app_version` inside `initAnalytics`, so every PostHog event from the
renderer can be split by client without relying on `$lib` (both Electron
and Next.js report "web"). `appVersion` flows in from `ClientIdentity`
via `CoreProvider` → `AuthInitializer`.
Add a Desktop `PageviewTracker` mounted in `DesktopShell` that fires
`$pageview` whenever the active tab's path changes, mirroring the Web
tracker. Restores the `/ → signup → workspace_created` funnel for the
desktop client and enables web-vs-desktop breakdowns.
* fix(analytics): preserve super-props on reset + cover overlay/login pageviews
Two blockers from PR review:
1. `posthog.reset()` wipes persisted super-properties, so after logout or
account switch the next session's events silently dropped `client_type`
and `app_version` until a full reload. Cache the set at init time and
re-register it inside `resetAnalytics()` so the breakdown survives the
auth transition. Added unit tests to pin the invariant.
2. Desktop `PageviewTracker` only watched the active tab path, which
missed pre-workspace overlays (`/onboarding`, `/workspaces/new`,
`/invite/<id>`) — those aren't tab routes on desktop — and also missed
the logged-out `/login` state. Move the tracker to the app root and
derive the visible path from `(user, overlay, activeTabPath)` with
overlay > tab precedence so the `$pageview` stream matches the
surface the user actually sees.
