docs(marketing): add GTM, social posts, Reddit plan, and SEO calendar

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docs/gtm-day-one.md

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+# GTM — Day One Action Plan
+
+> Created: 2026-03-04. Do these in order. Total time: ~4–5 hours.
+
+---
+
+## Right Now (1–2 hours, highest leverage)
+
+### 1. Submit sitemap to Google Search Console + Bing Webmaster Tools
+
+You have 80 programmatic city articles sitting unindexed. Every day without indexing is wasted compound time.
+
+- [search.google.com/search-console](https://search.google.com/search-console) → Add property → Submit sitemap
+- [bing.com/webmasters](https://www.bing.com/webmasters) (Bing also feeds DuckDuckGo, Ecosia, Yahoo)
+- Your SEO hub already supports both — just add the env vars
+
+### 2. Publish SEO articles on prod
+
+Run `seed_content --generate` from admin or CLI. Those 80 city pages (40 cities × EN+DE) are the primary organic traffic engine. Until they're live and crawlable, they generate zero value.
+
+### 3. Index the planner in Google
+
+Make sure `/en/calculator` and `/de/rechner` are in the sitemap and crawlable. This is the #1 free tool — the entire PLG funnel starts here. Check canonical tags and hreflang are correct.
+
+---
+
+## This Afternoon (2–3 hours, seed distribution)
+
+### 4. First LinkedIn post
+
+Data-driven insight from the pipeline. See `docs/social-posts.md` for the full post.
+
+### 5. Post in Reddit communities
+
+- **r/padel**: Free calculator angle — genuinely useful tool
+- **r/entrepreneur**: Indie maker angle — "built this with real market data"
+- **r/smallbusiness**: Business planning tool angle
+- **r/tennis**: Cross-sport angle — tennis clubs adding padel courts
+
+See `docs/social-posts.md` for all posts ready to copy-paste.
+
+### 6. Share in 2–3 Facebook padel business groups
+
+Same angle as Reddit — free tool, no hard sell. Search for:
+- "Padel Business" groups
+- "Padel Club Owners" groups
+- "Padel Deutschland" / "Padel Germany" groups
+
+---
+
+## This Evening (1 hour, set up compounding assets)
+
+### 7. Verify Resend production API key
+
+Test a real magic link email. Until email works in prod, you can't capture traffic.
+
+### 8. Wipe test suppliers
+
+Delete the 5 `example.com` entries. Empty directory with "Be the first to list" > obviously fake data.
+
+### 9. Request indexing for top 5 city pages
+
+After GSC is set up, use "Request Indexing" manually for highest-value pages:
+- `/de/markets/berlin`, `/de/markets/muenchen`, `/de/markets/hamburg`
+- `/en/markets/london`, `/en/markets/madrid`
+
+Google prioritizes manually requested URLs — can appear in search within days vs. weeks.
+
+---
+
+## What NOT to do today
+
+- ~~"State of Padel" report~~ — multi-day effort
+- ~~Supplier outreach~~ — site needs to be live + articles indexed first
+- ~~Copy/CRO optimization~~ — premature, get traffic first
+- ~~Paid ads~~ — excluded in channel strategy
+
+---
+
+## Expected outcome
+
+If you do steps 1–9 today:
+
+- 80 pages submitted for indexing (organic traffic starts in 1–3 weeks)
+- 3–5 social posts seeding traffic immediately
+- Planner discoverable and shareable
+- Email capture working for when traffic arrives
+
+**Single highest-leverage action: publish the articles + submit the sitemap.** Everything else is distribution on top of that foundation.