Add 12-month growth plan, baseline, weekly log and measurement loop

Week-by-week plan grounded in current GSC data (4,745 impressions, 9 clicks,
CTR 0.19%, hosting cluster at position 27.5, 1,090 impressions on page-1
zero-click queries). One bounded change per week, measured the following week.
Snapshot script: ~/.hermes/scripts/growth_week.py.

growth/BASELINE.md

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+# Baseline — 2026-10-24
+
+Captured from the n8n stats webhook before any CRO work. Every later week is compared to
+this. Range: 2026-01-01 → 2026-10-24.
+
+## Search Console (10 months)
+
+| metric | value |
+|---|---|
+| queries | 447 |
+| impressions | 4,745 |
+| clicks | 9 |
+| CTR | 0.19% |
+| average position | 24.7 |
+| queries with ≥10 impressions | 105 |
+| of those, on page 1 (pos ≤ 10) | 31 |
+| page-1 queries with **zero** clicks | 17, holding 1,090 impressions |
+
+Clusters:
+
+| cluster | queries | impressions | clicks | avg position |
+|---|---|---|---|---|
+| hosting (money) | 33 | 538 | 1 | 27.5 |
+| consulting | 11 | 402 | 0 | 50.4 |
+| AI | 22 | 555 | 0 | 9.6 |
+
+Head terms: `odoo hosting` 298 impr / pos 31.5 · `hosting odoo` 85 / 28.5 ·
+`odoo beratung` 155 / 51.5 · `odo ia` 279 / 6.8 (0 clicks) ·
+`odoo de donde es` 154 / 5.3 (0 clicks).
+
+## Plausible
+
+| metric | value |
+|---|---|
+| visitors | 2 (both test/owner traffic, week of 2026-10-19) |
+| pageviews | 3 |
+| goals configured | 1 — page goal `Visit /` |
+| affiliate clicks (goal) | not measured yet — custom-event goals not created |
+
+## Site
+
+- 1,208 HTML pages across 6 locales (es root, en, de, fr, pt, ar).
+- 479 outbound links to odoo4projects.com, all bearing `utm_source=odoo-expertos.com`.
+- 12 pages carry the hosting CTA block (6 homepages, 6 hosting hubs).
+- 40 near-duplicate `/odoo-hosting/*` pages per locale.
+- Known defects: 3 fabricated testimonials, unverifiable ISO 27001 / SOC 2 / "200+ proyectos"
+  badges, placeholder phone on 8 pages, one 0-byte page in the PT sitemap.
+
+## How to refresh
+
+```bash
+python3 ~/.hermes/skills/marketing/odoo-expertos-site/scripts/website_stats.py
+```
+
+Snapshots are appended to `growth/metrics.jsonl` by `~/.hermes/scripts/growth_week.py`.