docs: add Sales Navigator outreach runbook

SALESNAV_OUTREACH_RUNBOOK.md

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+# Sales Navigator outreach runbook
+
+This runbook describes a safe, resumable workflow for invitation campaigns in
+Sales Navigator. Keep browser profiles, exports, journals, names, message
+contents, and referral links outside version control.
+
+## Preflight
+
+1. Use only the explicitly selected external browser session and confirm the
+   intended account.
+2. Export the active people search into an account-local directory.
+3. Reconcile permanent exclusions, pending invitations, previously sent leads,
+   and recent withdrawn invitations.
+4. Report the selected count, the maximum free-invitation count, and that the
+   action consumes a real LinkedIn invitation quota.
+5. Review a compact sample for company and role relevance; search filters can
+   otherwise include unrelated employers or junior profiles.
+
+## Invitation rules
+
+- Use `Vernetzen` only; never replace a missing free action with InMail.
+- Treat second- and third-degree contacts as potential free candidates. A
+  missing/unclassified connection degree is not a free-route guarantee.
+- Keep notes under 300 characters, address the person naturally, and vary the
+  templates.
+- Select the message language only from the current campaign's explicit user
+  instruction or verified search filters. Do not inherit it from an earlier
+  campaign.
+- Stop on a security checkpoint, CAPTCHA, restriction, weekly limit, account
+  mismatch, or changed invitation dialog.
+
+## Long runs and recovery
+
+- Use a bounded worker with an append-only, account-local JSONL journal.
+- For deliberate slow clicking, configure human-like pauses and run the worker
+  in the background so a foreground shell timeout cannot interrupt it.
+- Monitor compact journal counts rather than page-wide DOM dumps.
+- On a stop request, terminate only the matching worker PID. Resume with the
+  same export, drafts, and journal; this prevents duplicate invitations.
+- Leave the browser open unless the operator explicitly asks to close it.