Update storage module: version 1.1, create_crypto(), get_project_info()

[Copilot]

Extends SecretsStorage with missing convenience methods needed by the info CLI command and as a cleaner API for callers that need a ready-to-use crypto instance.

storage.py

• Version bump "1.0" → "1.1" in initialize()
• create_crypto() — wraps load_encryption_key() into a single call; returns a ZeroEnvCrypto instance wired to the stored tier/salt
• get_project_info() — returns a flat dict (version, created_at, security_tier, secrets_count, directory) for use by the info command; gracefully defaults for legacy v1.0 files

# Before: callers had to do this manually
encryption_key = storage.load_encryption_key()
crypto = ZeroEnvCrypto(encryption_key)

# After
crypto = storage.create_crypto()

# Info panel data in one call
info = storage.get_project_info()
# {'version': '1.1', 'security_tier': 'enhanced', 'secrets_count': 3, ...}

tests/test_storage.py

• Updated test_initialize to assert version "1.1"
• TestCreateCrypto — covers all three tiers, determinism across calls, and round-trip encrypt/decrypt
• TestGetProjectInfo — covers all returned fields, tier variants, secrets count, directory, and backward compatibility with v1.0 files