🧹 Remove unused legacy modules and functions

- Deleted quota.rs module (quota management not needed via HTTP)
- Removed legacy get_id_by_token GraphQL function
- Removed unused set_user_quota and increase_user_quota methods
- Cleaned up unused imports and legacy structs
- Simplified handlers/mod.rs to only expose universal_handler

Architecture now focused on core functionality:
- GET / (user info)
- GET /<filename> (file serving)
- POST / (file upload)

Cargo.lock

@@ -117,7 +117,7 @@ dependencies = [
  "actix-multipart-derive",
  "actix-utils",
  "actix-web",
- "derive_more 0.99.18",
+ "derive_more 0.99.20",
  "futures-core",
  "futures-util",
  "httparse",
@@ -855,9 +855,9 @@ dependencies = [
 
 [[package]]
 name = "brotli"
-version = "8.0.1"
+version = "8.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9991eea70ea4f293524138648e41ee89b0b2b12ddef3b255effa43c8056e0e0d"
+checksum = "4bd8b9603c7aa97359dbd97ecf258968c95f3adddd6db2f7e7a5bef101c84560"
 dependencies = [
  "alloc-no-stdlib",
  "alloc-stdlib",
@@ -1106,18 +1106,18 @@ dependencies = [
 
 [[package]]
 name = "crossbeam-channel"
-version = "0.5.13"
+version = "0.5.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "33480d6946193aa8033910124896ca395333cae7e2d1113d1fef6c3272217df2"
+checksum = "82b8f8f868b36967f9606790d1903570de9ceaf870a7bf9fbbd3016d636a2cb2"
 dependencies = [
  "crossbeam-utils",
 ]
 
 [[package]]
 name = "crossbeam-utils"
-version = "0.8.20"
+version = "0.8.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "22ec99545bb0ed0ea7bb9b8e1e9122ea386ff8a48c0922e43f36d45ab09e0e80"
+checksum = "d0a5c400df2834b80a4c3327b3aad3a4c4cd4de0629063962b03235697506a28"
 
 [[package]]
 name = "crunchy"
@@ -1137,9 +1137,9 @@ dependencies = [
 
 [[package]]
 name = "darling"
-version = "0.20.10"
+version = "0.20.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6f63b86c8a8826a49b8c21f08a2d07338eec8d900540f8630dc76284be802989"
+checksum = "fc7f46116c46ff9ab3eb1597a45688b6715c6e628b5c133e288e709a29bcb4ee"
 dependencies = [
  "darling_core",
  "darling_macro",
@@ -1147,9 +1147,9 @@ dependencies = [
 
 [[package]]
 name = "darling_core"
-version = "0.20.10"
+version = "0.20.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "95133861a8032aaea082871032f5815eb9e98cef03fa916ab4500513994df9e5"
+checksum = "0d00b9596d185e565c2207a0b01f8bd1a135483d02d9b7b0a54b11da8d53412e"
 dependencies = [
  "fnv",
  "ident_case",
@@ -1161,9 +1161,9 @@ dependencies = [
 
 [[package]]
 name = "darling_macro"
-version = "0.20.10"
+version = "0.20.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d336a2a514f6ccccaa3e09b02d41d35330c07ddf03a62165fcec10bb561c7806"
+checksum = "fc34b93ccb385b40dc71c6fceac4b2ad23662c7eeb248cf10d529b7e055b6ead"
 dependencies = [
  "darling_core",
  "quote",
@@ -1201,9 +1201,9 @@ dependencies = [
 
 [[package]]
 name = "derive_more"
-version = "0.99.18"
+version = "0.99.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5f33878137e4dafd7fa914ad4e259e18a4e8e532b9617a2d0150262bf53abfce"
+checksum = "6edb4b64a43d977b8e99788fe3a04d483834fba1215a7e02caa415b626497f7f"
 dependencies = [
  "convert_case",
  "proc-macro2",
@@ -2644,7 +2644,7 @@ dependencies = [
 
 [[package]]
 name = "quoter"
-version = "0.5.1"
+version = "0.5.3"
 dependencies = [
  "actix",
  "actix-cors",
@@ -3787,9 +3787,9 @@ checksum = "06abde3611657adf66d383f00b093d7faecc7fa57071cce2578660c9f1010821"
 
 [[package]]
 name = "uuid"
-version = "1.18.0"
+version = "1.18.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f33196643e165781c20a5ead5582283a7dacbb87855d867fbc2df3f81eddc1be"
+checksum = "2f87b8aa10b915a06587d0dec516c282ff295b475d94abf425d62b57710070a2"
 dependencies = [
  "getrandom 0.3.3",
  "js-sys",
@@ -4277,27 +4277,27 @@ dependencies = [
 
 [[package]]
 name = "zstd"
-version = "0.13.2"
+version = "0.13.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fcf2b778a664581e31e389454a7072dab1647606d44f7feea22cd5abb9c9f3f9"
+checksum = "e91ee311a569c327171651566e07972200e76fcfe2242a4fa446149a3881c08a"
 dependencies = [
  "zstd-safe",
 ]
 
 [[package]]
 name = "zstd-safe"
-version = "7.2.1"
+version = "7.2.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "54a3ab4db68cea366acc5c897c7b4d4d1b8994a9cd6e6f841f8964566a419059"
+checksum = "8f49c4d5f0abb602a93fb8736af2a4f4dd9512e36f7f570d66e65ff867ed3b9d"
 dependencies = [
  "zstd-sys",
 ]
 
 [[package]]
 name = "zstd-sys"
-version = "2.0.13+zstd.1.5.6"
+version = "2.0.15+zstd.1.5.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "38ff0f21cfee8f97d94cef41359e0c89aa6113028ab0291aa8ca0038995a95aa"
+checksum = "eb81183ddd97d0c74cedf1d50d85c8d08c1b8b68ee863bdee9e706eedba1a237"
 dependencies = [
  "cc",
  "pkg-config",