feat(pitch-deck): interactive charts with Y-axes, click-to-detail, explanations

- All charts now have Y-axis labels with scale
- X-axis with year labels on border lines
- Click any chart → modal with KPI explanation + yearly breakdown
- 8 detail explanations: MRR, EBIT, Headcount, Cash, Rev vs Costs, ACV, Gross Margin, NRR, EBIT Margin
- Unit Economics cards clickable with hover effect
- Compact 2x2 grid for EBIT/Headcount and Cash/RevCost
- ISO 27001 cert moved to Jan 2027 on production

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

pitch-deck/app/api/admin/fp-patch/route.ts

@@ -1,32 +1,17 @@
 import { NextRequest, NextResponse } from 'next/server'
+import { requireAdmin } from '@/lib/admin-auth'
 import pool from '@/lib/db'
 import { computeFinanzplan } from '@/lib/finanzplan/engine'
 
+/** Admin-only: recompute a Finanzplan scenario. */
 export async function POST(request: NextRequest) {
-  const WD = 'c0000000-0000-0000-0000-000000000200'
+  const guard = await requireAdmin(request)
+  if (guard.kind === 'response') return guard.response
+
   const body = await request.json().catch(() => ({}))
-  const results: string[] = []
+  const scenarioId = body.scenarioId || (await pool.query("SELECT id FROM fp_scenarios WHERE is_default = true LIMIT 1")).rows[0]?.id
+  if (!scenarioId) return NextResponse.json({ error: 'No scenario found' }, { status: 404 })
 
-  try {
-    // ISO Cert: add months m13-m24 (Jan-Dec 2027) at 1500
-    const { rows } = await pool.query(`SELECT id, values FROM fp_betriebliche_aufwendungen WHERE scenario_id=$1 AND row_label ILIKE '%Zertifizierung%'`, [WD])
-    if (rows.length > 0) {
-      const vals = rows[0].values || {}
-      for (let m = 13; m <= 24; m++) {
-        if (!vals[`m${m}`]) vals[`m${m}`] = 1500
-      }
-      await pool.query(`UPDATE fp_betriebliche_aufwendungen SET values=$1 WHERE id=$2`, [JSON.stringify(vals), rows[0].id])
-      results.push('ISO cert from Jan 2027')
-    }
-
-    // Recompute if requested
-    if (body.recompute !== false) {
-      const r = await computeFinanzplan(pool, WD)
-      results.push(`WD cash_m60=${r.liquiditaet?.endstand?.m60}`)
-    }
-  } catch (err) {
-    results.push(`ERROR: ${err instanceof Error ? err.message : String(err)}`)
-  }
-
-  return NextResponse.json({ ok: true, results })
+  const result = await computeFinanzplan(pool, scenarioId)
+  return NextResponse.json({ success: true, scenarioId, cash_m60: result.liquiditaet?.endstand?.m60 })
 }