[Trace] Docs playbook fixes: broken link, meta descriptions, thin pages

[nicolasiscoding]

Closes TurboDocx/DotCom#304
Closes TurboDocx/DotCom#305

Trace AI SEO Playbook full run, 2026-09-27, scanned against Docs main. One PR for all Docs findings from the run.

1. Broken link (broken-link-checker)

• TurboSign/Webhooks.md: "View Integration Guides" linked /docs/Integrations, which returns 404 (Docs has no integrations index page). It now points to https://www.turbodocx.com/integrations (200).

2. Meta descriptions over 160 chars (meta-length-checker)

• TurboSign/How to Configure Signature Appearance.md: 231 → 149 (also removes em-dashes)
• TurboSign/Conditional Fields.md: 206 → 145
• Pipelines/Pipeline Notifications.md: 179 → 144
• TurboDocx Templating/Template Troubleshooting.md: 171 → 151

3. Thin pages expanded (thin-content-detector, quality-gates min 300 words)

Page	Words before	Words after
Welcome to TurboDocx.md	66	673
Advanced Configuration/Single-Sign On.md	243	592
Advanced Configuration/SCIM Provisioning.md	275	713
Integrations/Google Drive.md	208	665

Facts were checked against the shipped product:

• SSO: SAML 2.0/OIDC, Enterprise plan, set up with support. Microsoft Entra ID is proven in production. Auto-linking to existing accounts requires an IdP-verified email.
• SCIM: SCIM 2.0 users (create, filtered/paginated read, PATCH replace, deactivate), one bearer token per organization.
• Google Drive: import Docs/.docx (Slides/.pptx when PPTX is enabled), export to a chosen folder, Personal Drive only, plan-gated.

Deliberately not claimed:

• IdPs other than Entra ID by name; the page says any SAML/OIDC provider can connect.
• SCIM group sync (not implemented).
• Enterprise pricing and support SLAs.

Not changed (expected or false positives): auto-generated API/*.api.mdx, Ruby SDK drafts (gem unpublished), npm/Maven/AppSource 403s (bot blocking), commented-out images in ai-variable-generation.md.

Test plan

• meta-length-checker and thin-content-detector pass for these pages
• New link target returns 200; no em-dashes; front-matter keys and slugs unchanged
• Docs build / deploy check