feat(rag-pe): PRG-5 + PRG-6 frontend pensees ecologiques

- server/api/chatbot-pensees.post.ts : endpoint LightRAG VPS (hybrid mode, preface militante, rate limit 20/jour, health guard)
- nuxt.config.ts : ragPeUrl runtimeConfig (NUXT_RAG_PE_URL)
- public/data/auteurs-pensees.json : 18 auteurs FRACAS, 8 ecoles, theses, livres RAG
- components/CartePensees.vue : D3 force-directed (8 ecoles fixes + auteurs gravitants)
- components/FicheAuteur.vue : modal auteur (bio + theses + livres RAG + bouton RAG)
- components/ChatbotPensees.vue : overlay chatbot bottom-right (sources expansibles)
- pages/pensees-ecologiques.vue : page dedicee /pensees-ecologiques (toggle Familiale/Graphe)
- pages/agences.vue : 4e onglet "Pensees" (desktop + mobile) -> /pensees-ecologiques

Branche : feat/aep-rag-pensees-ecologiques
Checkpoint Jules requis avant merge main.

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

components/CartePensees.vue

@@ -0,0 +1,135 @@
+<template>
+  <div style="width: 100%; height: 100%; position: relative; background: var(--nav-bg);">
+    <svg ref="svgRef" style="width: 100%; height: 100%;"></svg>
+    <div ref="tooltipRef" style="
+      position: absolute; pointer-events: none;
+      background: var(--nav-surface); border: 1px solid var(--nav-bg-alt);
+      border-radius: 6px; padding: 8px 12px; font-size: 0.78rem;
+      color: var(--nav-text); max-width: 240px; box-shadow: 0 4px 12px rgba(0,0,0,0.15);
+      opacity: 0; transition: opacity 0.15s; z-index: 100;
+    "></div>
+  </div>
+</template>
+
+<script setup lang="ts">
+interface EcoleData { id: string; label: string; description: string; color: string; x_hint: number; y_hint: number }
+interface LivreRag { slug: string; titre: string; annee: number; couches: string[] }
+interface AuteurData { id: string; nom: string; dates: string; ecoles: string[]; ecole_principale: string; livres_rag: LivreRag[]; theses_cles: string[]; bio_courte: string }
+interface PenseesData { ecoles: EcoleData[]; auteurs: AuteurData[] }
+
+const props = defineProps<{ data: PenseesData | null; active?: boolean }>()
+const emit = defineEmits<{ 'select-auteur': [id: string] }>()
+
+const svgRef = ref<SVGElement | null>(null)
+const tooltipRef = ref<HTMLElement | null>(null)
+let simulation: any = null
+let d3NodeSel: any = null
+let d3LinkSel: any = null
+
+async function initGraph() {
+  if (!svgRef.value || !props.data) return
+  const d3 = await import('d3')
+  const svgEl = svgRef.value
+  const W = svgEl.clientWidth || 900
+  const H = svgEl.clientHeight || 600
+
+  d3.select(svgEl).selectAll('*').remove()
+  const svg = d3.select(svgEl).attr('viewBox', `0 0 ${W} ${H}`)
+  const g = svg.append('g')
+
+  svg.call(d3.zoom<SVGElement, unknown>().scaleExtent([0.3, 4]).on('zoom', (e) => g.attr('transform', e.transform)) as any)
+
+  const ecoleMap = new Map<string, EcoleData>(props.data.ecoles.map(e => [e.id, e]))
+
+  const ecoleNodes: any[] = props.data.ecoles.map(e => ({
+    id: `ecole-${e.id}`, type: 'ecole', ecoleId: e.id, label: e.label, color: e.color, r: 38,
+    x: W * e.x_hint, y: H * e.y_hint, fx: W * e.x_hint, fy: H * e.y_hint,
+  }))
+
+  const auteurNodes: any[] = props.data.auteurs.map(a => ({
+    id: a.id, type: 'auteur', nom: a.nom, dates: a.dates, bio_courte: a.bio_courte,
+    ecole_principale: a.ecole_principale,
+    color: ecoleMap.get(a.ecole_principale)?.color ?? '#888', r: 11,
+  }))
+
+  const allNodes = [...ecoleNodes, ...auteurNodes]
+  const links: any[] = []
+  props.data.auteurs.forEach(a => {
+    links.push({ source: a.id, target: `ecole-${a.ecole_principale}`, strength: 0.65 })
+    a.ecoles.filter(e => e !== a.ecole_principale).forEach(e => links.push({ source: a.id, target: `ecole-${e}`, strength: 0.25 }))
+  })
+
+  if (simulation) simulation.stop()
+  simulation = d3.forceSimulation(allNodes)
+    .force('link', d3.forceLink(links).id((d: any) => d.id).distance(90).strength((d: any) => d.strength ?? 0.5))
+    .force('charge', d3.forceManyBody().strength(-80))
+    .force('center', d3.forceCenter(W / 2, H / 2))
+    .force('collision', d3.forceCollide().radius((d: any) => d.r + 5))
+
+  d3LinkSel = g.append('g').selectAll('line').data(links).join('line')
+    .attr('stroke', 'rgba(150,150,150,0.3)').attr('stroke-width', 1.2)
+
+  d3NodeSel = g.append('g').selectAll('g').data(allNodes).join('g')
+    .style('cursor', (d: any) => d.type === 'auteur' ? 'pointer' : 'default')
+    .call(d3.drag<any, any>()
+      .on('start', (e: any, d: any) => { if (!e.active) simulation.alphaTarget(0.3).restart(); d.fx = d.x; d.fy = d.y })
+      .on('drag', (e: any, d: any) => { d.fx = e.x; d.fy = e.y })
+      .on('end', (e: any, d: any) => { if (!e.active) simulation.alphaTarget(0); if (d.type !== 'ecole') { d.fx = null; d.fy = null } }))
+    .on('click', (e: any, d: any) => { e.stopPropagation(); if (d.type === 'auteur') emit('select-auteur', d.id) })
+
+  d3NodeSel.append('circle')
+    .attr('r', (d: any) => d.r)
+    .attr('fill', (d: any) => d.type === 'ecole' ? d.color : d.color + 'cc')
+    .attr('stroke', (d: any) => d.type === 'ecole' ? 'rgba(255,255,255,0.6)' : d.color)
+    .attr('stroke-width', (d: any) => d.type === 'ecole' ? 3 : 1.5)
+
+  d3NodeSel.filter((d: any) => d.type === 'ecole').append('text')
+    .attr('text-anchor', 'middle').attr('dy', '0.35em').attr('font-size', '10px').attr('font-weight', '700').attr('fill', 'white')
+    .style('pointer-events', 'none')
+    .each(function(d: any) {
+      const el = d3.select(this as any)
+      const words: string[] = d.label.split(' ')
+      if (words.length <= 2) { el.text(d.label) } else {
+        const mid = Math.ceil(words.length / 2)
+        el.append('tspan').attr('x', 0).attr('dy', '-0.6em').text(words.slice(0, mid).join(' '))
+        el.append('tspan').attr('x', 0).attr('dy', '1.2em').text(words.slice(mid).join(' '))
+      }
+    })
+
+  d3NodeSel.filter((d: any) => d.type === 'auteur').append('text')
+    .attr('class', 'pensees-auteur-label')
+    .text((d: any) => d.nom.split(' ').pop() ?? d.nom)
+    .attr('text-anchor', 'middle').attr('dy', (d: any) => -(d.r + 4)).attr('font-size', '9px').attr('font-weight', '500')
+    .style('pointer-events', 'none')
+
+  d3NodeSel.filter((d: any) => d.type === 'auteur')
+    .on('mouseenter', (e: any, d: any) => {
+      if (!tooltipRef.value) return
+      const bio = d.bio_courte.length > 90 ? d.bio_courte.slice(0, 87) + '...' : d.bio_courte
+      tooltipRef.value.innerHTML = `<strong>${d.nom}</strong> <span style="opacity:0.6;font-size:0.7rem;">${d.dates}</span><br><span style="opacity:0.75;font-size:0.72rem;">${bio}</span>`
+      tooltipRef.value.style.opacity = '1'
+    })
+    .on('mousemove', (e: any) => {
+      if (!tooltipRef.value || !svgEl) return
+      const rect = (svgEl as HTMLElement).getBoundingClientRect()
+      tooltipRef.value.style.left = (e.clientX - rect.left + 14) + 'px'
+      tooltipRef.value.style.top = (e.clientY - rect.top - 10) + 'px'
+    })
+    .on('mouseleave', () => { if (tooltipRef.value) tooltipRef.value.style.opacity = '0' })
+
+  simulation.on('tick', () => {
+    d3LinkSel.attr('x1', (d: any) => d.source.x).attr('y1', (d: any) => d.source.y)
+      .attr('x2', (d: any) => d.target.x).attr('y2', (d: any) => d.target.y)
+    d3NodeSel.attr('transform', (d: any) => `translate(${d.x},${d.y})`)
+  })
+}
+
+watch(() => props.active, (val) => { if (val && import.meta.client && props.data) requestAnimationFrame(() => requestAnimationFrame(() => initGraph())) })
+watch(() => props.data, (val) => { if (val && props.active && import.meta.client) requestAnimationFrame(() => requestAnimationFrame(() => initGraph())) })
+onMounted(async () => { if (import.meta.client && props.data && props.active) { await nextTick(); initGraph() } })
+onUnmounted(() => { if (simulation) simulation.stop() })
+</script>
+
+<style>
+.pensees-auteur-label { fill: var(--nav-text); opacity: 0.75; paint-order: stroke; stroke: var(--nav-bg); stroke-width: 3px; stroke-linejoin: round; user-select: none; }
+</style>