Sprint 4 : decisions et mandats -- workflow complet + vote integration

Backend: 7 nouveaux endpoints (advance, assign, revoke, create-vote-session),
services enrichis avec creation de sessions de vote, assignation de mandataire
et revocation. 35 nouveaux tests (104 total). Frontend: store mandates, page
cadrage decisions, detail mandats, composants DecisionWorkflow, DecisionCadrage,
DecisionCard, MandateTimeline, MandateCard. Documentation mise a jour.

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

frontend/app/stores/decisions.ts

@@ -39,6 +39,20 @@ export interface DecisionCreate {
   voting_protocol_id?: string | null
 }
 
+export interface DecisionUpdate {
+  title?: string
+  description?: string | null
+  context?: string | null
+  decision_type?: string
+  voting_protocol_id?: string | null
+}
+
+export interface DecisionStepCreate {
+  step_type: string
+  title?: string | null
+  description?: string | null
+}
+
 interface DecisionsState {
   list: Decision[]
   current: Decision | null
@@ -59,10 +73,12 @@ export const useDecisionsStore = defineStore('decisions', {
       return (status: string) => state.list.filter(d => d.status === status)
     },
     activeDecisions: (state): Decision[] => {
-      return state.list.filter(d => d.status === 'active' || d.status === 'in_progress')
+      return state.list.filter(d =>
+        d.status === 'qualification' || d.status === 'review' || d.status === 'voting',
+      )
     },
     completedDecisions: (state): Decision[] => {
-      return state.list.filter(d => d.status === 'completed' || d.status === 'closed')
+      return state.list.filter(d => d.status === 'executed' || d.status === 'closed')
     },
   },
 
@@ -128,6 +144,108 @@ export const useDecisionsStore = defineStore('decisions', {
       }
     },
 
+    /**
+     * Update an existing decision.
+     */
+    async update(id: string, data: DecisionUpdate) {
+      this.error = null
+
+      try {
+        const { $api } = useApi()
+        const updated = await $api<Decision>(`/decisions/${id}`, {
+          method: 'PUT',
+          body: data,
+        })
+        if (this.current?.id === id) this.current = updated
+        const idx = this.list.findIndex(d => d.id === id)
+        if (idx >= 0) this.list[idx] = updated
+        return updated
+      } catch (err: any) {
+        this.error = err?.data?.detail || err?.message || 'Erreur lors de la mise a jour de la decision'
+        throw err
+      }
+    },
+
+    /**
+     * Delete a decision.
+     */
+    async delete(id: string) {
+      this.error = null
+
+      try {
+        const { $api } = useApi()
+        await $api(`/decisions/${id}`, { method: 'DELETE' })
+        this.list = this.list.filter(d => d.id !== id)
+        if (this.current?.id === id) this.current = null
+      } catch (err: any) {
+        this.error = err?.data?.detail || err?.message || 'Erreur lors de la suppression de la decision'
+        throw err
+      }
+    },
+
+    /**
+     * Advance the decision to the next step in its workflow.
+     */
+    async advance(id: string) {
+      this.error = null
+
+      try {
+        const { $api } = useApi()
+        const updated = await $api<Decision>(`/decisions/${id}/advance`, {
+          method: 'POST',
+        })
+        if (this.current?.id === id) this.current = updated
+        const idx = this.list.findIndex(d => d.id === id)
+        if (idx >= 0) this.list[idx] = updated
+        return updated
+      } catch (err: any) {
+        this.error = err?.data?.detail || err?.message || 'Erreur lors de l\'avancement de la decision'
+        throw err
+      }
+    },
+
+    /**
+     * Add a step to a decision.
+     */
+    async addStep(id: string, step: DecisionStepCreate) {
+      this.error = null
+
+      try {
+        const { $api } = useApi()
+        const newStep = await $api<DecisionStep>(`/decisions/${id}/steps`, {
+          method: 'POST',
+          body: step,
+        })
+        if (this.current?.id === id) {
+          this.current.steps.push(newStep)
+        }
+        return newStep
+      } catch (err: any) {
+        this.error = err?.data?.detail || err?.message || 'Erreur lors de l\'ajout de l\'etape'
+        throw err
+      }
+    },
+
+    /**
+     * Create a vote session for a specific step.
+     */
+    async createVoteSession(decisionId: string, stepId: string) {
+      this.error = null
+
+      try {
+        const { $api } = useApi()
+        const result = await $api<any>(`/decisions/${decisionId}/steps/${stepId}/create-vote-session`, {
+          method: 'POST',
+        })
+        // Refresh decision to get updated step with vote_session_id
+        await this.fetchById(decisionId)
+        return result
+      } catch (err: any) {
+        this.error = err?.data?.detail || err?.message || 'Erreur lors de la creation de la session de vote'
+        throw err
+      }
+    },
+
     /**
      * Clear the current decision.
      */