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>

Cargo.lock

@@ -590,54 +590,6 @@ dependencies = [
  "digest",
 ]
 
-[[package]]
-name = "idfoto-cli"
-version = "0.1.0"
-dependencies = [
- "anyhow",
- "arboard",
- "clap",
- "dirs",
- "ed25519-dalek",
- "hex",
- "idfoto-core",
- "rand",
- "rpassword",
- "serde",
- "serde_json",
-]
-
-[[package]]
-name = "idfoto-core"
-version = "0.1.0"
-dependencies = [
- "argon2",
- "chacha20poly1305",
- "ed25519-dalek",
- "image",
- "rand",
- "serde",
- "serde_json",
- "sha2",
- "thiserror 2.0.18",
-]
-
-[[package]]
-name = "idfoto-wasm"
-version = "0.1.0"
-dependencies = [
- "data-encoding",
- "getrandom",
- "hmac",
- "idfoto-core",
- "image",
- "js-sys",
- "serde_json",
- "sha1",
- "wasm-bindgen",
- "wasm-bindgen-test",
-]
-
 [[package]]
 name = "image"
 version = "0.25.10"
@@ -1056,6 +1008,54 @@ dependencies = [
  "thiserror 1.0.69",
 ]
 
+[[package]]
+name = "relicario-cli"
+version = "0.1.0"
+dependencies = [
+ "anyhow",
+ "arboard",
+ "clap",
+ "dirs",
+ "ed25519-dalek",
+ "hex",
+ "rand",
+ "relicario-core",
+ "rpassword",
+ "serde",
+ "serde_json",
+]
+
+[[package]]
+name = "relicario-core"
+version = "0.1.0"
+dependencies = [
+ "argon2",
+ "chacha20poly1305",
+ "ed25519-dalek",
+ "image",
+ "rand",
+ "serde",
+ "serde_json",
+ "sha2",
+ "thiserror 2.0.18",
+]
+
+[[package]]
+name = "relicario-wasm"
+version = "0.1.0"
+dependencies = [
+ "data-encoding",
+ "getrandom",
+ "hmac",
+ "image",
+ "js-sys",
+ "relicario-core",
+ "serde_json",
+ "sha1",
+ "wasm-bindgen",
+ "wasm-bindgen-test",
+]
+
 [[package]]
 name = "rpassword"
 version = "5.0.1"