chore: rename project from idfoto to relicario

Sweeping rename across crates, CLI binary, WASM bindings, extension, docs,
and vault metadata paths. Git remote updated to relicario.git.

- crates/idfoto-{core,cli,wasm} -> crates/relicario-{core,cli,wasm}
- IdfotoError -> RelicarioError
- IDFOTO_IMAGE env var -> RELICARIO_IMAGE
- ~/.config/idfoto -> ~/.config/relicario
- .idfoto/ vault metadata dir -> .relicario/ (breaking; pre-release)
- Binary name idfoto -> relicario
- Extension wasm module idfoto_wasm -> relicario_wasm
- Storage key idfotoSettings -> relicarioSettings
- All doc filenames and content references updated

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

extension/src/setup/setup.ts

@@ -1,4 +1,4 @@
-/// Vault initialization wizard — 4-step flow for creating new idfoto vaults.
+/// Vault initialization wizard — 4-step flow for creating new relicario vaults.
 ///
 /// Step 1: Choose host type (Gitea / GitHub)
 /// Step 2: Configure connection (URL, repo, token) + test
@@ -11,16 +11,16 @@ import type { VaultConfig } from '../shared/types';
 
 // --- WASM module (loaded dynamically) ---
 
-type WasmModule = typeof import('idfoto-wasm');
+type WasmModule = typeof import('relicario-wasm');
 let wasm: WasmModule | null = null;
 
 async function loadWasm(): Promise<WasmModule> {
   if (wasm) return wasm;
   const mod = await import(
     // @ts-ignore TS2307 — resolved at runtime, not by TS/webpack
-    /* webpackIgnore: true */ '../idfoto_wasm.js'
+    /* webpackIgnore: true */ '../relicario_wasm.js'
   ) as WasmModule & { default: (input?: string | URL) => Promise<void> };
-  await mod.default('../idfoto_wasm_bg.wasm');
+  await mod.default('../relicario_wasm_bg.wasm');
   wasm = mod;
   return mod;
 }
@@ -109,8 +109,8 @@ function render(): void {
 
   app.innerHTML = `
     <div class="pad" style="padding-top:12px;">
-      <img class="brand-logo" src="icons/idfoto-logo.svg" alt="" style="margin-bottom:12px;">
-      <div class="brand" style="margin-bottom:4px;">idfoto vault setup</div>
+      <img class="brand-logo" src="icons/relicario-logo.svg" alt="" style="margin-bottom:12px;">
+      <div class="brand" style="margin-bottom:4px;">relicario vault setup</div>
       ${progressHtml}
       ${state.error ? `<div class="error">${escapeHtml(state.error)}</div>` : ''}
       ${stepHtml}
@@ -412,14 +412,14 @@ function attachStep3(): void {
       const host = createGitHost(state.hostType, hostUrl, state.repoPath, state.apiToken);
 
       await host.writeFile(
-        '.idfoto/salt',
+        '.relicario/salt',
         salt,
         'init: vault salt',
       );
 
       const paramsBytes = new TextEncoder().encode(paramsJson);
       await host.writeFile(
-        '.idfoto/params.json',
+        '.relicario/params.json',
         paramsBytes,
         'init: KDF parameters',
       );
@@ -427,7 +427,7 @@ function attachStep3(): void {
       const devicesJson = '{"devices":[]}';
       const devicesBytes = new TextEncoder().encode(devicesJson);
       await host.writeFile(
-        '.idfoto/devices.json',
+        '.relicario/devices.json',
         devicesBytes,
         'init: device registry',
       );