feat(tools): persona-driven multi-domain corpus + model routing

Generalize the family-locked legal tools into caveauAI persona profiles
(client 57 chat profiles, resolved in-process via the chat_profiles bridge).
Each tool accepts an optional `profile` slug that scopes the corpus package(s),
search method, system prompt and synthesis model; omitting it falls back to the
family-legal package so existing behaviour is unchanged.

- dbnToolsResolvePersona / dbnToolsListPersonas / dbnToolsBootChatProfiles in
  bootstrap.php; new api/personas.php + dbn.list_personas MCP tool.
- LegalTools search/ask/corpusContextForSummarize and the BvjAnalyzer /
  LegalAnalysis / translate paths take the persona's packages + prompt + model.
- Persona <select> on ask/search/summarize (populated from api/personas.php).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

assets/js/tools.js

@@ -894,6 +894,7 @@ const tools = {
     payloadKey: 'question',
     placeholder: 'Example: What evidence is needed before asking for changes in custody arrangements?',
     usesLanguage: true,
+    usesPersona: true,
     badge: 'family-legal',
   },
   search: {
@@ -904,6 +905,7 @@ const tools = {
     payloadKey: 'query',
     placeholder: 'Example: barnets beste samvær foreldreansvar',
     usesLanguage: true,
+    usesPersona: true,
     badge: 'family-legal',
   },
   summarize: {
@@ -914,6 +916,7 @@ const tools = {
     payloadKey: 'text',
     placeholder: 'Paste a case note, letter, or excerpt.',
     usesLanguage: true,
+    usesPersona: true,
     badge: 'process-and-forget',
   },
   timeline: {
@@ -980,6 +983,8 @@ document.addEventListener('DOMContentLoaded', () => {
     uploadClear: document.querySelector('#uploadClear'),
     aliasSection: document.querySelector('#aliasSection'),
     corpusScopeControl: document.querySelector('#corpusScopeControl'),
+    personaControl: document.querySelector('#personaControl'),
+    personaSelect: document.querySelector('#personaSelect'),
     addAliasRow: document.querySelector('#addAliasRow'),
     aliasRows: document.querySelector('#aliasRows'),
     audioZone: document.querySelector('#audioZone'),
@@ -1057,6 +1062,7 @@ document.addEventListener('DOMContentLoaded', () => {
 
   if (state.authenticated) {
     checkHealth();
+    if (els.personaSelect) loadPersonas();
   } else {
     els.loginEmail?.focus();
   }
@@ -1084,6 +1090,7 @@ function setTool(toolName) {
     els.input.placeholder = tool.placeholder;
   }
   els.languageControl.classList.toggle('is-hidden', !tool.usesLanguage);
+  els.personaControl?.classList.toggle('is-hidden', !tool.usesPersona || !personaState.options.length);
   els.corpusScopeControl?.classList.toggle('is-hidden', toolName !== 'search');
   els.redactionControl.classList.toggle('is-hidden', toolName !== 'redact');
   els.uploadZone.classList.toggle('is-hidden', toolName !== 'redact' && toolName !== 'timeline');
@@ -1154,6 +1161,10 @@ async function runTool(event) {
   if (tool.usesLanguage) {
     payload.language = currentLanguage();
   }
+  if (tool.usesPersona) {
+    const profile = currentPersona();
+    if (profile) payload.profile = profile;
+  }
   if (state.activeTool === 'search') {
     payload.limit = 7;
     payload.corpus_scope = currentCorpusScope();
@@ -1530,6 +1541,47 @@ function currentCorpusScope() {
   return document.querySelector('input[name="corpusScope"]:checked')?.value || 'both';
 }
 
+const personaState = { options: [], default: 'family' };
+
+function currentPersona() {
+  return els.personaSelect?.value || personaState.default || '';
+}
+
+async function loadPersonas() {
+  if (!els.personaSelect) return;
+  try {
+    const response = await fetch('api/personas.php', {
+      method: 'GET',
+      headers: { Accept: 'application/json' },
+      credentials: 'same-origin',
+    });
+    const data = await response.json().catch(() => ({}));
+    if (!response.ok || !data || data.ok !== true || !Array.isArray(data.personas) || !data.personas.length) return;
+    personaState.options = data.personas;
+    personaState.default = data.default_persona || 'family';
+    const saved = sessionStorage.getItem('dbnPersona');
+    els.personaSelect.innerHTML = '';
+    for (const p of data.personas) {
+      const opt = document.createElement('option');
+      opt.value = p.slug;
+      opt.textContent = p.name || p.slug;
+      els.personaSelect.appendChild(opt);
+    }
+    const initial = (saved && data.personas.some((p) => p.slug === saved))
+      ? saved
+      : (data.personas.some((p) => p.slug === personaState.default) ? personaState.default : data.personas[0].slug);
+    els.personaSelect.value = initial;
+    els.personaSelect.addEventListener('change', () => {
+      sessionStorage.setItem('dbnPersona', els.personaSelect.value);
+    });
+    if (tools[state.activeTool]?.usesPersona) {
+      els.personaControl?.classList.remove('is-hidden');
+    }
+  } catch (_) {
+    // Personas are optional UI sugar; ignore failures (e.g. pre-seed environments).
+  }
+}
+
 function currentRedactionMode() {
   return document.querySelector('input[name="redactionMode"]:checked')?.value || 'standard';
 }