feat: initial commit - oncology literature search platform

OncoLit: a multi-tenant oncology literature search, feed, and
collaboration platform. Built with FastAPI + Vue 3 + PostgreSQL.
Includes PubMed pipeline, drug approvals, AI summaries, and
systematic review tools.

.pre-commit-config.yaml

@@ -0,0 +1,26 @@
+repos:
+  - repo: https://github.com/astral-sh/ruff-pre-commit
+    rev: v0.4.0
+    hooks:
+      - id: ruff
+        args: [--fix]
+      - id: ruff-format
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v4.6.0
+    hooks:
+      - id: trailing-whitespace
+      - id: end-of-file-fixer
+      - id: check-added-large-files
+      - id: check-merge-conflict
+      - id: detect-private-key
+  - repo: https://github.com/pre-commit/mirrors-eslint
+    rev: v9.0.0
+    hooks:
+      - id: eslint
+        files: ^frontend/src/
+        types: [file]
+        additional_dependencies:
+          - eslint@^9.0.0
+          - '@typescript-eslint/parser@^8.0.0'
+          - '@typescript-eslint/eslint-plugin@^8.0.0'
+          - eslint-plugin-vue@^9.0.0