Linked Issue

Closes #5893
Closes #5818

Description

This PR fixes an issue where hosted SDK and CLI methods build API URLs by interpolating caller-provided identifiers directly into URL path segments. When these identifiers contain URL-structural characters (such as /, ?, or #), they alter the generated request URL semantics instead of being treated as a literal path segment.

We resolve this by percent-encoding the dynamic path segment values before inserting them into API paths (e.g. converting org/team?active#frag -> org%2Fteam%3Factive%23frag).

Affected areas fixed:

1. Python SDK memory paths: Encoded memory_id and entity names in main.py using urllib.parse.quote(..., safe='').
2. Python CLI memory, entity, and event paths: Encoded path parameters in platform.py using urllib.parse.quote(..., safe='').
3. TypeScript SDK memory and entity paths: Wrapped template segments in mem0.ts with encodeURIComponent().
4. Node CLI memory, entity, and event paths: Wrapped template segments in platform.ts with encodeURIComponent().

Type of Change

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Refactor (no functional changes)
• Documentation update

Breaking Changes

N/A

Test Coverage

• I added/updated unit tests
• I added/updated integration tests
• I tested manually (describe below)
• No tests needed (explain why)

Added comprehensive unit tests to verify that structural characters in path parameters are properly percent-encoded:

• Python SDK: Added TestUrlEncoding and TestAsyncUrlEncoding in tests/test_client.py.
• Python CLI: Added tests in cli/python/tests/test_backend.py.
• TypeScript SDK: Added tests in mem0-ts/src/client/tests/memoryClient.urlEncoding.test.ts.
• Node CLI: Added tests in cli/node/tests/backend.test.ts.

Checklist

• My code follows the project's style guidelines
• I have performed a self-review of my code
• I have added tests that prove my fix/feature works
• New and existing tests pass locally
• I have updated documentation if needed