* auto fixes
* auto fix pt2 and transitive deps and undefined var checking locals()
* manual fixes (ignored or letta-code fixed)
* fix circular import
* remove all ignores, add FastAPI rules and Ruff rules
* add ty and precommit
* ruff stuff
* ty check fixes
* ty check fixes pt 2
* error on invalid
* fix(core): catch bare openai.APIError in handle_llm_error fallthrough
openai.APIError raised during streaming (e.g. OpenRouter credit
exhaustion) is not an APIStatusError, so it skipped the catch-all
at the end and fell through to LLMError("Unhandled"). Now bare
APIErrors that aren't context window overflows are mapped to
LLMBadRequestError.
Datadog: https://us5.datadoghq.com/error-tracking/issue/7a2c356c-0849-11f1-be66-da7ad0900000🐾 Generated with [Letta Code](https://letta.com)
Co-Authored-By: Letta <noreply@letta.com>
* feat(core): add LLMInsufficientCreditsError for BYOK credit exhaustion
Adds dedicated error type for insufficient credits/quota across all
providers (OpenAI, Anthropic, Google). Returns HTTP 402 with
BYOK-aware messaging instead of generic 400.
- New LLMInsufficientCreditsError class and PAYMENT_REQUIRED ErrorCode
- is_insufficient_credits_message() helper detecting credit/quota strings
- All 3 provider clients detect 402 status + credit keywords
- FastAPI handler returns 402 with "your API key" vs generic messaging
- 5 new parametrized tests covering OpenRouter, OpenAI, and negative case
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---------
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* catch contextwindowexceeded error
* fix(core): detect Google token limit errors as ContextWindowExceededError
Google's error message says "input token count exceeds the maximum
number of tokens allowed" which doesn't contain the word "context",
so it was falling through to generic LLMBadRequestError instead of
ContextWindowExceededError. This means compaction won't auto-trigger.
Expands the detection to also match "token count" and "tokens allowed"
in addition to the existing "context" keyword.
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* fix(core): add missing message arg to LLMBadRequestError in OpenAI client
The generic 400 path in handle_llm_error was constructing
LLMBadRequestError without the required message positional arg,
causing TypeError in prod during summarization.
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* ci: add adapters/ test suite to core unit test matrix
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* fix(tests): update adapter error handling test expectations to match actual behavior
The streaming adapter's error handling double-wraps errors: the
AnthropicStreamingInterface calls handle_llm_error first, then the
adapter catches the result and calls handle_llm_error again, which
falls through to the base class LLMError. Updated test expectations
to match this behavior.
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* fix(core): prevent double-wrapping of LLMError in stream adapter
The AnthropicStreamingInterface.process() already transforms raw
provider errors into LLMError subtypes via handle_llm_error. The
adapter was catching the result and calling handle_llm_error again,
which didn't recognize the already-transformed LLMError and wrapped
it in a generic LLMError("Unhandled LLM error"). This downgraded
specific error types (LLMConnectionError, LLMServerError, etc.)
and broke retry logic that matches on specific subtypes.
Now the adapter checks if the error is already an LLMError and
re-raises it as-is. Tests restored to original correct expectations.
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---------
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GoogleAIClient and GoogleVertexClient were hardcoding Letta's managed
credentials for all requests, ignoring user-provided BYOK API keys.
This meant Letta was paying Google API costs for BYOK users.
Add _get_client_async and update _get_client to check BYOK overrides
(via get_byok_overrides / get_byok_overrides_async) before falling back
to managed credentials, matching the pattern used by OpenAIClient and
AnthropicClient.
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Google genai.errors.ClientError with code 400 was being caught and
wrapped as LLMBadRequestError but returned to clients as 502 because
no dedicated FastAPI exception handler existed for LLMBadRequestError.
- Add LLMBadRequestError exception handler in app.py returning HTTP 400
- Fix ErrorCode on Google 400 bad requests from INTERNAL_SERVER_ERROR
to INVALID_ARGUMENT
- Route Google API errors through handle_llm_error in stream_async path
Datadog: https://us5.datadoghq.com/error-tracking/issue/4eb3ff3c-d937-11f0-8177-da7ad0900000🤖 Generated with [Letta Code](https://letta.com)
Co-authored-by: Letta <noreply@letta.com>
* google gen ai format error fix
* fix(core): add $ref safety net, warning log, and unit tests for Google schema resolution
- Add `$ref` to unsupported_keys in `_clean_google_ai_schema_properties` so unresolvable refs (e.g. `#/properties/...` style) are stripped as a safety net instead of crashing the Google SDK
- Add warning log when `_resolve_json_schema_refs` encounters a ref it cannot resolve
- Deduplicate the `#/$defs/` and `#/definitions/` resolution branches
- Add 11 unit tests covering: single/multiple $defs, nested refs, refs in anyOf/allOf, array items, definitions key, unresolvable refs, and the full resolve+clean pipeline
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---------
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The google.genai.errors.ClientError with code 499 (CANCELLED) indicates the
client disconnected, not a server-side failure. Previously this fell through
to the generic ClientError handler and was classified as LLMServerError,
causing false 500s in Datadog error tracking.
- Add explicit 499 handling in handle_llm_error: log at info level, return
LLMConnectionError instead of LLMServerError
- Catch 499 during stream iteration in stream_async and end gracefully
instead of propagating the error
Datadog: https://us5.datadoghq.com/error-tracking/issue/c8453aaa-d559-11f0-81c6-da7ad0900000🤖 Generated with [Letta Code](https://letta.com)
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* fix(core): preserve Gemini thought_signature on function calls in non-streaming path
The Google Gemini API requires thought_signature to be echoed back on
function call parts in multi-turn conversations. In the non-streaming
request path, the signature was only captured for subsequent function
calls (else branch) but dropped for the first/only function call (if
branch) in convert_response_to_chat_completion. This caused 400
INVALID_ARGUMENT errors on the next turn.
Additionally, when no ReasoningContent existed to carry the signature
(e.g. Gemini 2.5 Flash with include_thoughts=False), the signature was
lost in the adapter layer. Now it falls through to TextContent.
Datadog: https://us5.datadoghq.com/error-tracking/issue/17c4b114-d596-11f0-bcd6-da7ad0900000🤖 Generated with [Letta Code](https://letta.com)
Co-Authored-By: Letta <noreply@letta.com>
* fix(core): preserve Gemini thought_signature in non-temporal agent path
Carry reasoning_content_signature on TextContent in letta_agent.py
at both locations where content falls through from reasoning (same
fix already applied to the adapter and temporal activity paths).
Co-authored-by: Kian Jones <kianjones9@users.noreply.github.com>
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---------
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Co-authored-by: letta-code <248085862+letta-code@users.noreply.github.com>
Multiple OpenAI-compatible LLM clients (Azure, Deepseek, Groq, Together, XAI, ZAI)
and Anthropic-compatible clients (Anthropic, MiniMax, Google Vertex) were overriding
request_async/stream_async without calling sanitize_unicode_surrogates, causing
UnicodeEncodeError when message content contained lone UTF-16 surrogates.
Root cause: Child classes override parent methods but omit the sanitization step that
the base OpenAIClient includes. This allows corrupted Unicode (unpaired surrogates
from malformed emoji) to reach the httpx layer, which rejects it during UTF-8 encoding.
Fix: Import and call sanitize_unicode_surrogates in all overridden request methods.
Also removed duplicate sanitize_unicode_surrogates definition from openai_client.py
that shadowed the canonical implementation in letta.helpers.json_helpers.
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Issue-ID: 10c0f2e4-f87b-11f0-b91c-da7ad0900000
* fix: handle const keyword in google genai tool schemas
* fix: handle pydantic ValidationError in Google GenAI client
Fixes Datadog error tracking issue where pydantic_core.ValidationError
was raised when tool schemas contained unsupported fields (e.g., 'const',
'default', 'additionalProperties').
Changes:
- Add error handling for pydantic ValidationError in request(), request_async(), and stream_async()
- Convert validation errors to LLMBadRequestError with helpful error message
- Deep copy tool parameters before cleaning to avoid modifying shared objects
- Add imports for pydantic_core and copy module
This prevents unhandled exceptions and provides better diagnostics when
tool schemas contain fields not supported by Google AI API.
* feat: add non-streaming option for conversation messages
- Add ConversationMessageRequest with stream=True default (backwards compatible)
- stream=true (default): SSE streaming via StreamingService
- stream=false: JSON response via AgentLoop.load().step()
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* chore: regenerate API schema for ConversationMessageRequest
* feat: add direct ClickHouse storage for raw LLM traces
Adds ability to store raw LLM request/response payloads directly in ClickHouse,
bypassing OTEL span attribute size limits. This enables debugging and analytics
on large LLM payloads (>10MB system prompts, large tool schemas, etc.).
New files:
- letta/schemas/llm_raw_trace.py: Pydantic schema with ClickHouse row helper
- letta/services/llm_raw_trace_writer.py: Async batching writer (fire-and-forget)
- letta/services/llm_raw_trace_reader.py: Reader with query methods
- scripts/sql/clickhouse/llm_raw_traces.ddl: Production table DDL
- scripts/sql/clickhouse/llm_raw_traces_local.ddl: Local dev DDL
- apps/core/clickhouse-init.sql: Local dev initialization
Modified:
- letta/settings.py: Added 4 settings (store_llm_raw_traces, ttl, batch_size, flush_interval)
- letta/llm_api/llm_client_base.py: Integration into request_async_with_telemetry
- compose.yaml: Added ClickHouse service for local dev
- justfile: Added clickhouse, clickhouse-cli, clickhouse-traces commands
Feature disabled by default (LETTA_STORE_LLM_RAW_TRACES=false).
Uses ZSTD(3) compression for 10-30x reduction on JSON payloads.
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* fix: address code review feedback for LLM raw traces
Fixes based on code review feedback:
1. Fix ClickHouse endpoint parsing - default to secure=False for raw host:port
inputs (was defaulting to HTTPS which breaks local dev)
2. Make raw trace writes truly fire-and-forget - use asyncio.create_task()
instead of awaiting, so JSON serialization doesn't block request path
3. Add bounded queue (maxsize=10000) - prevents unbounded memory growth
under load. Drops traces with warning if queue is full.
4. Fix deprecated asyncio usage - get_running_loop() instead of get_event_loop()
5. Add org_id fallback - use _telemetry_org_id if actor doesn't have it
6. Remove unused imports - json import in reader
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* fix: add missing asyncio import and simplify JSON serialization
- Add missing 'import asyncio' that was causing 'name asyncio is not defined' error
- Remove unnecessary clean_double_escapes() function - the JSON is stored correctly,
the clickhouse-client CLI was just adding extra escaping when displaying
- Update just clickhouse-trace to use Python client for correct JSON output
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* test: add clickhouse raw trace integration test
* test: simplify clickhouse trace assertions
* refactor: centralize usage parsing and stream error traces
Use per-client usage helpers for raw trace extraction and ensure streaming errors log requests with error metadata.
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* test: exercise provider usage parsing live
Make live OpenAI/Anthropic/Gemini requests with credential gating and validate Anthropic cache usage mapping when present.
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* test: fix usage parsing tests to pass
- Use GoogleAIClient with GEMINI_API_KEY instead of GoogleVertexClient
- Update model to gemini-2.0-flash (1.5-flash deprecated in v1beta)
- Add tools=[] for Gemini/Anthropic build_request_data
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* refactor: extract_usage_statistics returns LettaUsageStatistics
Standardize on LettaUsageStatistics as the canonical usage format returned by client helpers. Inline UsageStatistics construction for ChatCompletionResponse where needed.
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* feat: add is_byok and llm_config_json columns to ClickHouse traces
Extend llm_raw_traces table with:
- is_byok (UInt8): Track BYOK vs base provider usage for billing analytics
- llm_config_json (String, ZSTD): Store full LLM config for debugging and analysis
This enables queries like:
- BYOK usage breakdown by provider/model
- Config parameter analysis (temperature, max_tokens, etc.)
- Debugging specific request configurations
* feat: add tests for error traces, llm_config_json, and cache tokens
- Update llm_raw_trace_reader.py to query new columns (is_byok,
cached_input_tokens, cache_write_tokens, reasoning_tokens, llm_config_json)
- Add test_error_trace_stored_in_clickhouse to verify error fields
- Add test_cache_tokens_stored_for_anthropic to verify cache token storage
- Update existing tests to verify llm_config_json is stored correctly
- Make llm_config required in log_provider_trace_async()
- Simplify provider extraction to use provider_name directly
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* ci: add ClickHouse integration tests to CI pipeline
- Add use-clickhouse option to reusable-test-workflow.yml
- Add ClickHouse service container with otel database
- Add schema initialization step using clickhouse-init.sql
- Add ClickHouse env vars (CLICKHOUSE_ENDPOINT, etc.)
- Add separate clickhouse-integration-tests job running
integration_test_clickhouse_llm_raw_traces.py
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* refactor: simplify provider and org_id extraction in raw trace writer
- Use model_endpoint_type.value for provider (not provider_name)
- Simplify org_id to just self.actor.organization_id (actor is always pydantic)
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* refactor: simplify LLMRawTraceWriter with _enabled flag
- Check ClickHouse env vars once at init, set _enabled flag
- Early return in write_async/flush_async if not enabled
- Remove ValueError raises (never used)
- Simplify _get_client (no validation needed since already checked)
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* fix: add LLMRawTraceWriter shutdown to FastAPI lifespan
Properly flush pending traces on graceful shutdown via lifespan
instead of relying only on atexit handler.
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* feat: add agent_tags column to ClickHouse traces
Store agent tags as Array(String) for filtering/analytics by tag.
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* cleanup
* fix(ci): fix ClickHouse schema initialization in CI
- Create database separately before loading SQL file
- Remove CREATE DATABASE from SQL file (handled in CI step)
- Add verification step to confirm table was created
- Use -sf flag for curl to fail on HTTP errors
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* refactor: simplify LLM trace writer with ClickHouse async_insert
- Use ClickHouse async_insert for server-side batching instead of manual queue/flush loop
- Sync cloud DDL schema with clickhouse-init.sql (add missing columns)
- Remove redundant llm_raw_traces_local.ddl
- Remove unused batch_size/flush_interval settings
- Update tests for simplified writer
Key changes:
- async_insert=1, wait_for_async_insert=1 for reliable server-side batching
- Simple per-trace retry with exponential backoff (max 3 retries)
- ~150 lines removed from writer
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* refactor: consolidate ClickHouse direct writes into TelemetryManager backend
- Add clickhouse_direct backend to provider_trace_backends
- Remove duplicate ClickHouse write logic from llm_client_base.py
- Configure via LETTA_TELEMETRY_PROVIDER_TRACE_BACKEND=postgres,clickhouse_direct
The clickhouse_direct backend:
- Converts ProviderTrace to LLMRawTrace
- Extracts usage stats from response JSON
- Writes via LLMRawTraceWriter with async_insert
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* refactor: address PR review comments and fix llm_config bug
Review comment fixes:
- Rename clickhouse_direct -> clickhouse_analytics (clearer purpose)
- Remove ClickHouse from OSS compose.yaml, create separate compose.clickhouse.yaml
- Delete redundant scripts/test_llm_raw_traces.py (use pytest tests)
- Remove unused llm_raw_traces_ttl_days setting (TTL handled in DDL)
- Fix socket description leak in telemetry_manager docstring
- Add cloud-only comment to clickhouse-init.sql
- Update justfile to use separate compose file
Bug fix:
- Fix llm_config not being passed to ProviderTrace in telemetry
- Now correctly populates provider, model, is_byok for all LLM calls
- Affects both request_async_with_telemetry and log_provider_trace_async
DDL optimizations:
- Add secondary indexes (bloom_filter for agent_id, model, step_id)
- Add minmax indexes for is_byok, is_error
- Change model and error_type to LowCardinality for faster GROUP BY
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* refactor: rename llm_raw_traces -> llm_traces
Address review feedback that "raw" is misleading since we denormalize fields.
Renames:
- Table: llm_raw_traces -> llm_traces
- Schema: LLMRawTrace -> LLMTrace
- Files: llm_raw_trace_{reader,writer}.py -> llm_trace_{reader,writer}.py
- Setting: store_llm_raw_traces -> store_llm_traces
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* fix: update workflow references to llm_traces
Missed renaming table name in CI workflow files.
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* fix: update clickhouse_direct -> clickhouse_analytics in docstring
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* chore: remove inaccurate OTEL size limit comments
The 4MB limit is our own truncation logic, not an OTEL protocol limit.
The real benefit is denormalized columns for analytics queries.
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* chore: remove local ClickHouse dev setup (cloud-only feature)
- Delete clickhouse-init.sql and compose.clickhouse.yaml
- Remove local clickhouse just commands
- Update CI to use cloud DDL with MergeTree for testing
clickhouse_analytics is a cloud-only feature. For local dev, use postgres backend.
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* fix: restore compose.yaml to match main
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* refactor: merge clickhouse_analytics into clickhouse backend
Per review feedback - having two separate backends was confusing.
Now the clickhouse backend:
- Writes to llm_traces table (denormalized for cost analytics)
- Reads from OTEL traces table (will cut over to llm_traces later)
Config: LETTA_TELEMETRY_PROVIDER_TRACE_BACKEND=postgres,clickhouse
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* fix: correct path to DDL file in CI workflow
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* chore: add provider index to DDL for faster filtering
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* fix: configure telemetry backend in clickhouse tests
Tests need to set telemetry_settings.provider_trace_backends to include
'clickhouse', otherwise traces are routed to default postgres backend.
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* fix: set provider_trace_backend field, not property
provider_trace_backends is a computed property, need to set the
underlying provider_trace_backend string field instead.
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* fix: error trace test and error_type extraction
- Add TelemetryManager to error trace test so traces get written
- Fix error_type extraction to check top-level before nested error dict
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* fix: use provider_trace.id for trace correlation across backends
- Pass provider_trace.id to LLMTrace instead of auto-generating
- Log warning if ID is missing (shouldn't happen, helps debug)
- Fallback to new UUID only if not set
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* fix: trace ID correlation and concurrency issues
- Strip "provider_trace-" prefix from ID for UUID storage in ClickHouse
- Add asyncio.Lock to serialize writes (clickhouse_connect not thread-safe)
- Fix Anthropic prompt_tokens to include cached tokens for cost analytics
- Log warning if provider_trace.id is missing
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---------
Co-authored-by: Letta <noreply@letta.com>
Co-authored-by: Caren Thomas <carenthomas@gmail.com>
Adds explicit handling for httpx network errors (ReadError, WriteError,
ConnectError) in AnthropicClient, OpenAIClient, and GoogleVertexClient.
These errors can occur during streaming when the connection is unexpectedly
closed while reading/writing data.
Maps these errors to LLMConnectionError for consistent error handling.
Fixes#8221 (and duplicate #8156)
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Co-authored-by: Letta <noreply@letta.com>
Co-authored-by: Kian Jones <11655409+kianjones9@users.noreply.github.com>
* feat: squash rebase of OSS PR
* fix: revert changes that weren't on manual rebase
* fix: caught another one
* fix: disable force
* chore: drop print
* fix: just stage-api && just publish-api
* fix: make agent_type consistently an arg in the client
* fix: patch multi-modal support
* chore: put in todo stub
* fix: disable hardcoding for tests
* fix: patch validate agent sync (#4882)
patch validate agent sync
* fix: strip bad merge diff
* fix: revert unrelated diff
* fix: react_v2 naming -> letta_v1 naming
* fix: strip bad merge
---------
Co-authored-by: Kevin Lin <klin5061@gmail.com>
* remove apps/core and apps/fern
* fix precommit
* add submodule updates in workflows
* submodule
* remove core tests
* update core revision
* Add submodules: true to all GitHub workflows
- Ensure all workflows can access git submodules
- Add submodules support to deployment, test, and CI workflows
- Fix YAML syntax issues in workflow files
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Co-Authored-By: Claude <noreply@anthropic.com>
* remove core-lint
* upgrade core with latest main of oss
---------
Co-authored-by: Claude <noreply@anthropic.com>
* fix(core): update default value
* fix: just stage just publish
* fix(core): temporary hardcoding of the anthropic max tokens
* fix(core): patch the gemini
* base requirements
* autofix
* Configure ruff for Python linting and formatting
- Set up minimal ruff configuration with basic checks (E, W, F, I)
- Add temporary ignores for common issues during migration
- Configure pre-commit hooks to use ruff with pass_filenames
- This enables gradual migration from black to ruff
* Delete sdj
* autofixed only
* migrate lint action
* more autofixed
* more fixes
* change precommit
* try changing the hook
* try this stuff
* fix: gemini flash integration test
* also update google flash
* catch error in test
* revert test changes
* do try catch again
* remove try catch from streaming tests
* add try catch for summarize test also
