Introduce extension SDK for TS - #21

- add provenance-checked V1 and V2 schema artifacts
- implement generation-specific declarations and strict codecs
- cover protocol invariants with property-based tests

- implement the connected session port and immediate executions
- manage tool declarations with abortable ordered refreshes
- add input routing, lifecycle guards, and V2 tool codecs

- add package-level format and format-check scripts
- enforce formatting in the package check workflow
- preserve immutable schema artifacts through ignore rules

- Add V1 and V2 task drivers with polling, notifications, and retries
- Implement conflated updates, cancellation, and lifecycle cleanup
- Cover protocol envelopes and adversarial races with property tests

- Add type-aware ESLint configuration for the ext-tasks package
- Integrate linting into package checks and prepack verification
- Fix type-safety, lifecycle, and test diagnostics without suppressions

- Correlate V1 task input with related-task metadata
- Handle keyed V2 input through validated partial updates
- Add fail-closed and lifecycle race coverage

- Bind serialized references to durable endpoint identities
- Resume V1 and V2 tasks with generation-specific lifecycles
- Adapt Client 2.0 through public request and handler seams

- Split client and core monoliths into cohesive internal modules
- Consolidate generation-specific task drivers and remove pre-release aliases
- Strengthen codec, export, packed-consumer, and CI contracts

- Share generation-neutral codec validation and path helpers
- Preserve generation-specific request and wire decoding
- Require and add JSDoc for exported functions

- Replace handwritten V1/V2 codecs and wire types with inferred Zod schemas
- Accept caller result schemas directly and remove custom codec compatibility APIs
- Harden schema exports, protocol defaults, and packed dependency contracts

- Enable the strict type-checked typescript-eslint preset
- Resolve all unsafe, redundant, and confusing typed lint findings
- Strengthen runtime boundary checks and race/property tests

- Extract input projection, correlation, and context utilities
- Decompose V2 input resolution and schema construction
- Clarify task update queues and close a notification startup race

Centralize snapshot arbitration and observation sequencing behind named driver contexts. Decompose V2 task and input processing, with regression coverage for terminal authority and one-shot input keys.

Replace forward-declared branch results with focused helpers and explicit outcomes. Keep timing-sensitive session locals and iterative cursor state unchanged.

- Finalize generation-tagged declarations and codec-neutral results
- Correct task input routing, recovery ownership, and lifecycle cleanup
- Add packed exports and SDK peer-range contract validation
- Document the initial client integration API without naming consumers

Signed-off-by: Luca Chang <lucalc@amazon.com>

- Add semantic task sessions, controllers, settlement, and input routing
- Add SDK raw-dispatch integration and receiver task bindings
- Add runtime boundary adapters and generation-neutral projections
- Remove obsolete task-result bridging and session history APIs
- Expand protocol, lifecycle, packaging, and consumer validation

Signed-off-by: Luca Chang <lucalc@amazon.com>

- Add per-request timeout options to tool calls and task controllers
- Preserve timeout context across initiating and follow-up requests
- Forward timeout values through the SDK client adapter
- Cover managed and detached task request propagation

Signed-off-by: Luca Chang <lucalc@amazon.com>