Add planner landing page, archive change

Replace blank home page with landing page: hero with "Start Planning"
CTA, 5 feature cards, Journal CTA, footer with attribution. All strings
in en + de. Sync planner-session spec and archive change.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

openspec/changes/archive/2026-03-25-planner-landing-page/.openspec.yaml

@@ -0,0 +1,2 @@
+schema: spec-driven
+created: 2026-03-25

openspec/changes/archive/2026-03-25-planner-landing-page/design.md

@@ -0,0 +1,44 @@
+## Context
+
+The Planner home page is currently a centered heading ("trails.cool Planner")
+and subtitle. It has no CTA, no explanation, and no way to start. Users must
+know to visit `/new` to create a session.
+
+## Goals / Non-Goals
+
+**Goals:**
+- Explain what the Planner does in 5 seconds of reading
+- One-click session creation (no signup, no form)
+- Feature highlights: collaborative, BRouter routing, elevation, GPX export
+- Link to Journal for users who want accounts and saved routes
+- i18n (English + German)
+- Fast load, SSR-friendly, no heavy JS
+
+**Non-Goals:**
+- Marketing copy or elaborate graphics
+- Pricing or plans
+- User testimonials
+- Interactive map demo on the landing page (too heavy)
+
+## Decisions
+
+### D1: Single-page component in home.tsx
+
+No new route — rewrite `apps/planner/app/routes/home.tsx`. The page is static
+content + a CTA link to `/new`. No loader needed.
+
+### D2: Feature cards with icons
+
+Show 4-5 feature highlights as simple cards: collaborative editing, route
+profiles, elevation profile, GPX export, no account needed. Use Tailwind —
+no icon library, just emoji or simple SVG.
+
+### D3: Link to Journal as secondary CTA
+
+"Want to save your routes? Create a free account on trails.cool" — links to
+the Journal. This bridges the two apps without requiring Journal for basic use.
+
+### D4: Footer with legal and links
+
+Privacy link (points to Journal's /privacy), GitHub repo, "Built with
+BRouter and OpenStreetMap" attribution.

openspec/changes/archive/2026-03-25-planner-landing-page/proposal.md

@@ -0,0 +1,34 @@
+## Why
+
+The Planner at planner.trails.cool should work as a standalone product — anyone
+can visit, understand what it does, and start planning a route without needing
+the Journal. Currently the home page is a blank heading with no explanation and
+no way to start. Visitors bounce immediately.
+
+## What Changes
+
+- Replace the Planner home page with a landing page that explains the tool:
+  collaborative route planning, BRouter routing, GPX export, no account needed
+- Prominent "Start Planning" CTA that creates a new session
+- Brief feature highlights (collaborative editing, routing profiles, elevation,
+  GPX export)
+- Footer with links to trails.cool Journal, privacy page, GitHub repo
+- The landing page should load fast — no heavy assets, SSR-friendly
+
+## Capabilities
+
+### New Capabilities
+
+(None — this replaces an existing page with useful content.)
+
+### Modified Capabilities
+
+- `planner-session`: Home page becomes a landing page with session creation CTA
+- `map-display`: Landing page may show a decorative map or screenshot
+
+## Impact
+
+- **Files**: `apps/planner/app/routes/home.tsx` (complete rewrite), i18n keys
+- **Dependencies**: None
+- **Design**: Needs to look good — this is the first impression for standalone
+  Planner users

openspec/changes/archive/2026-03-25-planner-landing-page/specs/planner-session/spec.md

@@ -0,0 +1,16 @@
+## MODIFIED Requirements
+
+### Requirement: Planner home page
+The Planner home page SHALL explain the tool's purpose and provide a one-click way to start planning.
+
+#### Scenario: First-time visitor
+- **WHEN** a user visits planner.trails.cool for the first time
+- **THEN** they see a landing page explaining collaborative route planning, key features, and a prominent "Start Planning" button
+
+#### Scenario: Start a session
+- **WHEN** a user clicks "Start Planning"
+- **THEN** a new anonymous session is created and the user is redirected to the session view
+
+#### Scenario: Journal link
+- **WHEN** a user wants to save routes permanently
+- **THEN** a secondary CTA links to trails.cool for account creation

openspec/changes/archive/2026-03-25-planner-landing-page/tasks.md

@@ -0,0 +1,16 @@
+## 1. Landing Page Content
+
+- [x] 1.1 Rewrite Planner home.tsx with hero section: heading, subtitle, "Start Planning" CTA linking to /new
+- [x] 1.2 Add feature highlights section (4-5 cards): collaborative editing, routing profiles, elevation profile, GPX export, no account needed
+- [x] 1.3 Add secondary CTA: "Save your routes on trails.cool" linking to Journal
+- [x] 1.4 Add footer: privacy link, GitHub repo, BRouter/OSM attribution
+
+## 2. i18n
+
+- [x] 2.1 Add all landing page strings to en.ts and de.ts (hero, features, CTAs, footer)
+
+## 3. Verify
+
+- [x] 3.1 Verify landing page renders correctly at planner.trails.cool
+- [x] 3.2 Verify "Start Planning" creates a session and redirects
+- [x] 3.3 Update E2E planner test if home page assertions changed