refactor: rename packages/core to packages/fp (#266)

- Rename folder from packages/core to packages/fp to match package name @deessejs/fp
- Update all references in workflows, docs, and rules
- Update skill metadata name from deessejs-core to deesse-fp
- Fix broken links in comparison.mdx pointing to removed why-not-try-catch page

Co-authored-by: martyy-code <nesalia.inc@gmail.com>

Author: codewizdave

.claude/rules/error-handling.md

@@ -38,6 +38,6 @@ updates:
 
   # Package-specific updates (if you add more packages)
   # - package-ecosystem: "npm"
-  #   directory: "/packages/core"
+  #   directory: "/packages/fp"
   #   schedule:
   #     interval: "weekly"

.claude/rules/functional-programming.md

@@ -4,17 +4,17 @@ on:
   push:
     branches: [main]
     paths:
-      - 'packages/core/src/**'
-      - 'packages/core/tests/**'
-      - 'packages/core/vitest.config.ts'
-      - 'packages/core/tsconfig.json'
+      - 'packages/fp/src/**'
+      - 'packages/fp/tests/**'
+      - 'packages/fp/vitest.config.ts'
+      - 'packages/fp/tsconfig.json'
   pull_request:
     branches: [main]
     paths:
-      - 'packages/core/src/**'
-      - 'packages/core/tests/**'
-      - 'packages/core/vitest.config.ts'
-      - 'packages/core/tsconfig.json'
+      - 'packages/fp/src/**'
+      - 'packages/fp/tests/**'
+      - 'packages/fp/vitest.config.ts'
+      - 'packages/fp/tsconfig.json'
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
@@ -65,7 +65,7 @@ jobs:
 
       - name: Run tests with coverage
         run: |
-          cd packages/core
+          cd packages/fp
           npx vitest run --coverage
 
       - name: Find coverage comment
@@ -102,7 +102,7 @@ jobs:
           script: |
             try {
               const fs = require('fs');
-              const coveragePath = './packages/core/coverage/coverage-summary.json';
+              const coveragePath = './packages/fp/coverage/coverage-summary.json';
 
               if (!fs.existsSync(coveragePath)) {
                 console.log('Coverage file not found, skipping comment');

.claude/rules/railway-oriented-programming.md

@@ -29,7 +29,7 @@ jobs:
 
       - name: Publish to npm
         run: |
-          cd packages/core
+          cd packages/fp
           echo '//registry.npmjs.org/:_authToken=${{ secrets.NPM_TOKEN }}' > .npmrc
           npm publish --include-dist --access public
 

.claude/skills/doc-score/SKILL.md

@@ -5,4 +5,4 @@
 
 # Require 2 approvals for these paths
 .github/ @AliiiBenn
-packages/core/src/ @AliiiBenn
+packages/fp/src/ @AliiiBenn