feat: add wallet profile database schema and repositories (#11)

- Add SQLAlchemy models for wallet profiles, funding transfers, and relationships
- Add WalletRepository, FundingRepository, RelationshipRepository with async support
- Add DatabaseManager for connection and session management
- Add Alembic migration for initial schema
- Include comprehensive test suite with 21 tests using in-memory SQLite

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

alembic.ini

@@ -0,0 +1,79 @@
+# Alembic Configuration File
+
+[alembic]
+# Path to migration scripts
+script_location = alembic
+
+# Template used to generate migration files
+file_template = %%(year)d%%(month).2d%%(day).2d_%%(hour).2d%%(minute).2d_%%(slug)s
+
+# Prepend timestamp to migration file names
+prepend_date = True
+
+# Timezone to use when rendering the date within the migration file
+# as well as the filename. Use UTC for consistency.
+timezone = UTC
+
+# Max length of characters to apply to the "slug" field
+truncate_slug_length = 40
+
+# Set to 'true' to run the environment during the 'revision' command
+revision_environment = false
+
+# Set to 'true' to allow .pyc and .pyo files without a source .py file
+sourceless = false
+
+# Version location specification
+version_locations = %(here)s/alembic/versions
+
+# Version path separator
+version_path_separator = os
+
+# Database URL - override with SQLALCHEMY_DATABASE_URL environment variable
+sqlalchemy.url = postgresql://localhost/polymarket_tracker
+
+
+[post_write_hooks]
+# Post write hooks define scripts to run after generating new revision files
+
+# Format using "black" - only if available
+# hooks = black
+# black.type = console_scripts
+# black.entrypoint = black
+# black.options = -q
+
+
+# Logging configuration
+[loggers]
+keys = root,sqlalchemy,alembic
+
+[handlers]
+keys = console
+
+[formatters]
+keys = generic
+
+[logger_root]
+level = WARN
+handlers = console
+qualname =
+
+[logger_sqlalchemy]
+level = WARN
+handlers =
+qualname = sqlalchemy.engine
+
+[logger_alembic]
+level = INFO
+handlers =
+qualname = alembic
+
+[handler_console]
+class = StreamHandler
+args = (sys.stderr,)
+level = NOTSET
+formatter = generic
+
+[formatter_generic]
+format = %(levelname)-5.5s [%(name)s] %(message)s
+datefmt = %H:%M:%S