feat(extractors): expand catalog, smoke coverage, and sourcing docs

Adds Arc.dev, BC T-Net, Eluta, iCIMS tenants, QAJobsBoard, and SmartRecruiters
manifests with registry/settings/UI wiring; registers full extractor list in
smoke-extractors and documents supplementary board access paths. Aligns Careerjet
v4 with the url query parameter and fixes strict typing in QAJobsBoard.

Co-authored-by: Cursor <cursoragent@cursor.com>

.env.example

@@ -200,6 +200,7 @@ ADZUNA_APP_KEY=
 # LEVER_COMPANIES=netflix,figma
 # ASHBY_COMPANIES=ramp,linear
 # GREENHOUSE_COMPANIES=stripe,airbnb
+# Canadian QA-employer examples (full table): docs-site/docs/extractors/canadian-companies-qa-ats.md
 
 # =============================================================================
 # Workday (public career sites) - optional
@@ -210,3 +211,46 @@ ADZUNA_APP_KEY=
 #   2) A JSON object with explicit fields:
 #      {"company":"NVIDIA","tenantUrl":"https://nvidia.wd5.myworkdayjobs.com","tenant":"nvidia","site":"NVIDIAExternalCareerSite","locale":"en-US"}
 # WORKDAY_TENANTS=
+
+# =============================================================================
+# SmartRecruiters (public Posting API) - optional
+# =============================================================================
+# Comma- or newline-separated company identifiers (API path segment), e.g.
+# jobs.smartrecruiters.com/smartrecruiters/... → "smartrecruiters".
+# SMARTRECRUITERS_COMPANIES=smartrecruiters
+# SMARTRECRUITERS_MAX_JOBS_PER_COMPANY=100
+
+# =============================================================================
+# Eluta (Canada, RSS by location) - optional
+# =============================================================================
+# Comma- or newline-separated location strings for https://www.eluta.ca/rss?location=...
+# Example: ELUTA_RSS_LOCATIONS=Toronto, ON|Vancouver, BC
+# ELUTA_MAX_JOBS_PER_TERM=100
+
+# =============================================================================
+# BC T-Net (British Columbia tech jobs RSS) — optional
+# =============================================================================
+# Default feed is built into the extractor when this is unset:
+# https://www.bctechnology.com/rss/jobs/tnetjobs.xml
+# Override with JSON array or newline-separated URLs (custom feeds from T-Net builder).
+# BCTENET_RSS_URLS=
+# Prefer Settings: bctenetRssUrls (JSON array), bctenetMaxJobsPerTerm (default 400).
+
+# =============================================================================
+# iCIMS tenant portals (anonymous HTML search) — optional
+# =============================================================================
+# Comma- or newline-separated hosts, e.g. careers-example.icims.com
+# ICIMS_TENANTS=
+# Caps via Settings: icimsMaxJobsPerTenant (default 250), icimsMaxPagesPerSearch (default 10).
+
+# =============================================================================
+# QAJobsBoard (QA JobBoardly JSON) — optional
+# =============================================================================
+# Configure caps via Settings: qajobsboardMaxJobsPerTerm (default 100).
+
+# =============================================================================
+# Arc.dev remote listings — optional
+# =============================================================================
+# Comma-separated paths under https://arc.dev used when seeding defaults (e.g. Playwright + Cypress feeds).
+# ARC_REMOTE_JOBS_PATHS=/remote-jobs/playwright,/remote-jobs/cypress
+# Prefer Settings for overrides: arcRemoteJobsPaths (JSON array), arcMaxJobsPerPath (default 120).