chore: Upgrade adcp library to 3.5.0

[KonstantinMirin]

Summary

Upgrade the adcp Python library from 3.2.0 to 3.5.0 to gain access to new AdCP v3 types and enable 9 feature issues currently waiting on library support.

What 3.3.0 brings

New request/response types

• SyncAccountsRequest/Response, ListAccountsRequest/Response, Account — multi-advertiser account management
• GetMediaBuyArtifactsRequest/Response, Artifact — media buy artifact retrieval
• LogEventRequest/Response, SyncEventSourcesRequest/Response — conversion tracking
• GetCreativeDeliveryRequest/Response — creative-level delivery metrics
• DeliveryForecast, ForecastMethod, ForecastPoint, ForecastRange — delivery forecasting

New targeting and pricing types

• DaypartTarget — daypart targeting
• PricingModel.cpa, PricingModel.time — CPA and time-based pricing

Improved core types

• PaginationRequest (cursor, max_results) and PaginationResponse (cursor, has_more, total_count) — cursor-based pagination
• BrandManifestReference (RootModel[BrandManifest | AnyUrl]) — unified brand manifest handling
• GetProductsRequest now includes all 10 spec fields (product_selectors, pagination, account_id, etc.)
• Creative restructured with variants and variant_count for multi-variant creative support
• Property updated with identifier and type fields

Migration scope

The upgrade requires updating models that extend library types to align with the new field structures:

Area	Scope	Est. test updates
Creative model	Align with variants-based structure	~30 tests
Property model	Align with identifier/type fields	~4 tests
Pagination	Adopt cursor-based PaginationRequest/PaginationResponse, update import paths	~10 tests
GetProductsRequest	Extend library directly (zero local fields needed)	~5 tests
GetMediaBuyDeliveryRequest	Remove redundant account_id override	~2 tests
Import paths	Pagination moved from list_creatives_request/response to core/pagination_request/pagination_response	~5 tests

Confirmed migration pattern

GetProductsRequest migration has been validated — all 10 fields inherited from library with zero local re-declarations:

class GetProductsRequest(LibraryGetProductsRequest):
    model_config = ConfigDict(extra=get_pydantic_extra_mode())

Pydantic auto-coerces BrandManifest dicts into BrandManifestReference. Existing create_get_products_request() helper works without changes.

This upgrade unblocks

Prerequisite for:

• feat: Add cursor-based pagination to artifacts and delivery tools #1033 — Cursor-based pagination (needs PaginationRequest)
• feat: Add daypart targeting support #1031 — Daypart targeting (needs DaypartTarget)
• feat: Implement get_creative_delivery tool #1030 — get_creative_delivery tool (needs restructured Creative)
• feat: Implement sync_accounts tool #1029 — sync_accounts tool (needs SyncAccountsRequest/Response)
• feat: Implement delivery forecasting #1028 — Delivery forecasting (needs DeliveryForecast types)
• feat: Implement conversion tracking (log_event, sync_event_sources) #1027 — Conversion tracking (needs LogEventRequest/Response)
• feat: Support CPA and TIME pricing models #1026 — CPA and TIME pricing (needs PricingModel.cpa, PricingModel.time)
• feat: Implement list_accounts tool (AdCP v3.2) #1011 — list_accounts tool (needs ListAccountsRequest/Response)
• feat: Implement get_media_buy_artifacts tool #1001 — get_media_buy_artifacts tool (needs GetMediaBuyArtifactsRequest/Response)

Strengthens:

• feat: Implement property_list filtering in get_products #997 — property_list filtering (GetProductsRequest.product_selectors inherited directly)
• feat: Support v3 structured geo targeting with inclusion and exclusion #1006 — Structured geo targeting (updated TargetingOverlay patterns)
• refactor: Separate Agent and Account - support multi-advertiser agents #1012 — Agent/Account separation (Account type available as reference model)

Acceptance criteria

• adcp>=3.3.0 in pyproject.toml, uv lock clean
• All import paths updated (Pagination, PaginationRequest)
• Creative model aligned with variants structure
• Property model aligned with identifier/type fields
• GetProductsRequest extends library with zero local field re-declarations
• GetMediaBuyDeliveryRequest.account_id local override removed
• KNOWN_NOT_EXTENDED updated in test_schema_library_inheritance.py
• make quality passes
• No regressions in unit tests