Add white theme, post delete, and passkey authentication

- Rewrite CSS to light/white theme
- Add delete button (auth-gated) with confirm dialog
- Add passkey register/login/logout routes via @simplewebauthn
- Gate compose form and delete behind session authentication
- Add credentials table to SQLite schema
- Add SESSION_SECRET and WebAuthn env vars to docker-compose

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

1 files changed, 245 insertions, 0 deletions

diff --git a/package-lock.json b/package-lock.json
index c671d3b..3c3b310 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -8,6 +8,8 @@
       "dependencies": {
         "@react-router/node": "^7.3.0",
         "@react-router/serve": "^7.3.0",
+        "@simplewebauthn/browser": "^13.3.0",
+        "@simplewebauthn/server": "^13.3.1",
         "better-sqlite3": "^12.9.0",
         "isbot": "^5.1.36",
         "marked": "^14.0.0",
@@ -879,6 +881,11 @@
         "node": ">=18"
       }
     },
+    "node_modules/@hexagon/base64": {
+      "version": "1.1.28",
+      "resolved": "https://registry.npmjs.org/@hexagon/base64/-/base64-1.1.28.tgz",
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       "version": "0.3.13",
       "resolved": "https://registry.npmjs.org/@jridgewell/gen-mapping/-/gen-mapping-0.3.13.tgz",
@@ -924,11 +931,171 @@
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       }
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+    "node_modules/@levischuck/tiny-cbor": {
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+      "resolved": "https://registry.npmjs.org/@peculiar/asn1-android/-/asn1-android-2.8.0.tgz",
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+        "tslib": "^2.8.1"
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+        "asn1js": "^3.0.10",
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+    "node_modules/@peculiar/asn1-ecc": {
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+        "tslib": "^2.8.1"
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+        "@peculiar/asn1-x509": "^2.8.0",
+        "asn1js": "^3.0.10",
+        "tslib": "^2.8.1"
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+    "node_modules/@peculiar/asn1-schema": {
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+    "node_modules/@peculiar/utils": {
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+      "resolved": "https://registry.npmjs.org/@peculiar/utils/-/utils-2.0.3.tgz",
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+    "node_modules/@peculiar/x509": {
+      "version": "1.14.3",
+      "resolved": "https://registry.npmjs.org/@peculiar/x509/-/x509-1.14.3.tgz",
+      "integrity": "sha512-C2Xj8FZ0uHWeCXXqX5B4/gVFQmtSkiuOolzAgutjTfseNOHT3pUjljDZsTSxXFGgio54bCzVFqmEOUrIVk8RDA==",
+      "dependencies": {
+        "@peculiar/asn1-cms": "^2.6.0",
+        "@peculiar/asn1-csr": "^2.6.0",
+        "@peculiar/asn1-ecc": "^2.6.0",
+        "@peculiar/asn1-pkcs9": "^2.6.0",
+        "@peculiar/asn1-rsa": "^2.6.0",
+        "@peculiar/asn1-schema": "^2.6.0",
+        "@peculiar/asn1-x509": "^2.6.0",
+        "pvtsutils": "^1.3.6",
+        "reflect-metadata": "^0.2.2",
+        "tslib": "^2.8.1",
+        "tsyringe": "^4.10.0"
+      },
+      "engines": {
+        "node": ">=20.0.0"
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+    },
     "node_modules/@react-router/dev": {
       "version": "7.18.0",
       "resolved": "https://registry.npmjs.org/@react-router/dev/-/dev-7.18.0.tgz",
@@ -1393,6 +1560,29 @@
         "win32"
       ]
     },
+    "node_modules/@simplewebauthn/browser": {
+      "version": "13.3.0",
+      "resolved": "https://registry.npmjs.org/@simplewebauthn/browser/-/browser-13.3.0.tgz",
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+    },
+    "node_modules/@simplewebauthn/server": {
+      "version": "13.3.1",
+      "resolved": "https://registry.npmjs.org/@simplewebauthn/server/-/server-13.3.1.tgz",
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+      "dependencies": {
+        "@hexagon/base64": "^1.1.27",
+        "@levischuck/tiny-cbor": "^0.2.2",
+        "@peculiar/asn1-android": "^2.6.0",
+        "@peculiar/asn1-ecc": "^2.6.1",
+        "@peculiar/asn1-rsa": "^2.6.1",
+        "@peculiar/asn1-schema": "^2.6.0",
+        "@peculiar/asn1-x509": "^2.6.1",
+        "@peculiar/x509": "^1.14.3"
+      },
+      "engines": {
+        "node": ">=20.0.0"
+      }
+    },
     "node_modules/@tailwindcss/node": {
       "version": "4.3.1",
       "resolved": "https://registry.npmjs.org/@tailwindcss/node/-/node-4.3.1.tgz",
@@ -1732,6 +1922,19 @@
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+    "node_modules/asn1js": {
+      "version": "3.0.10",
+      "resolved": "https://registry.npmjs.org/asn1js/-/asn1js-3.0.10.tgz",
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+        "pvutils": "^1.1.5",
+        "tslib": "^2.8.1"
+      },
+      "engines": {
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     "node_modules/babel-dead-code-elimination": {
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@@ -3512,6 +3715,22 @@
         "once": "^1.3.1"
       }
     },
+    "node_modules/pvtsutils": {
+      "version": "1.3.6",
+      "resolved": "https://registry.npmjs.org/pvtsutils/-/pvtsutils-1.3.6.tgz",
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+      "dependencies": {
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@@ -3649,6 +3868,11 @@
         "url": "https://paulmillr.com/funding/"
       }
     },
+    "node_modules/reflect-metadata": {
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@@ -4057,6 +4281,11 @@
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+      "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.8.1.tgz",
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@@ -4075,6 +4304,22 @@
         "fsevents": "~2.3.3"
       }
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+    "node_modules/tsyringe": {
+      "version": "4.10.0",
+      "resolved": "https://registry.npmjs.org/tsyringe/-/tsyringe-4.10.0.tgz",
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+      },
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