refactor!: rename liquidity pools to components

[Troshchk]

Rename all liquidity-pool naming to "component" (matching Tycho's ProtocolComponent and the component_id wire field); "pool" alone now always means a worker pool -- docs, comments, tests, and internal identifiers only, with no behavior change.

Breaking changes:

• fynd-core public API: DerivedData pool-depth accessors are now component_depths() / component_depths_block() / set_component_depths() / clear_component_depths(); PoolDepths / PoolDepthKey are now ComponentDepths / ComponentDepthKey; PoolDepthComputation is now ComponentDepthComputation; MarketState::pool_counts_by_protocol() is now component_counts_by_protocol().
• GET /v1/prices (experimental feature): response fields pool_depths → component_depths, both the top-level array and the entry in blocks. Request parameters (include=depths) are unchanged.
• TypeScript client: Swap.poolId → Swap.componentId. The quote wire format is unchanged.
• PoolConfig -> WorkerPoolConfig
• WorkerPoolConfig (spawn-level) -> WorkerPoolSpawnConfig
• FyndBuilder::add_pool -> add_worker_pool
• SolverBuildError::NoPools -> NoWorkerPools
• defaults::{POOL_TASK_QUEUE_CAPACITY, POOL_MIN_HOPS, POOL_MAX_HOPS, POOL_TIMEOUT_MS} -> WORKER_POOL_*

Not changed (intentionally, to avoid breaking consumers): the quote API wire format, Prometheus metric names (market_pools, market_pools_per_protocol), and the pool_depths computation ID used as the computation metric label.

[github-actions]

Breaking API Changes (Intentional)

Breaking API changes detected and declared in the PR title.
release-plz derives the bump from commits: verify a !-marked commit is in this PR so the release PR shows a minor bump (breaking changes on 0.x.x bump the minor).

semver-checks output

Checking fynd-core v0.97.7 -> v0.97.7 (no change; assume minor)
     Checked [   0.865s] 196 checks: 195 pass, 1 fail, 0 warn, 49 skip

--- failure inherent_method_missing: pub method removed or renamed ---

Description:
A publicly-visible method or associated fn is no longer available under its prior name. It may have been renamed or removed entirely.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#item-remove
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.46.0/src/lints/inherent_method_missing.ron

Failed in:
  DerivedData::pool_depths, previously in file fynd-core/src/derived/store.rs:216
  DerivedData::pool_depths_block, previously in file fynd-core/src/derived/store.rs:221
  DerivedData::set_pool_depths, previously in file fynd-core/src/derived/store.rs:230
  DerivedData::pool_depth_failure, previously in file fynd-core/src/derived/store.rs:258
  DerivedData::clear_pool_depths, previously in file fynd-core/src/derived/store.rs:265
  MarketState::pool_counts_by_protocol, previously in file fynd-core/src/feed/market_data.rs:365

     Summary semver requires new major version: 1 major and 0 minor checks failed
    Finished [   1.194s] fynd-core
    Checking fynd-test-fixtures v0.97.7 -> v0.97.7 (no change; assume minor)
     Checked [   0.087s] 196 checks: 194 pass, 2 fail, 0 warn, 49 skip

--- failure constructible_struct_adds_field: externally-constructible struct adds field ---

Description:
A pub struct constructible with a struct literal has a new pub field. Existing struct literals must be updated to include the new field.
        ref: https://doc.rust-lang.org/reference/expressions/struct-expr.html
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.46.0/src/lints/constructible_struct_adds_field.ron

Failed in:
  field ExpectedMetadata.num_components in test-fixtures/src/expected.rs:50
  field ExpectedMetadata.num_components in test-fixtures/src/expected.rs:50
  field DerivedDataMetrics.components_with_spot_prices in test-fixtures/src/expected.rs:64
  field DerivedDataMetrics.components_with_depths in test-fixtures/src/expected.rs:66
  field DerivedDataMetrics.components_with_spot_prices in test-fixtures/src/expected.rs:64
  field DerivedDataMetrics.components_with_depths in test-fixtures/src/expected.rs:66

--- failure struct_pub_field_missing: pub struct's pub field removed or renamed ---

Description:
A publicly-visible struct has at least one public field that is no longer available under its prior name. It may have been renamed or removed entirely.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#item-remove
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.46.0/src/lints/struct_pub_field_missing.ron

Failed in:
  field num_pools of struct ExpectedMetadata, previously in file test-fixtures/src/expected.rs:50
  field num_pools of struct ExpectedMetadata, previously in file test-fixtures/src/expected.rs:50
  field spot_price_pools of struct DerivedDataMetrics, previously in file test-fixtures/src/expected.rs:64
  field pool_depth_pools of struct DerivedDataMetrics, previously in file test-fixtures/src/expected.rs:66
  field spot_price_pools of struct DerivedDataMetrics, previously in file test-fixtures/src/expected.rs:64
  field pool_depth_pools of struct DerivedDataMetrics, previously in file test-fixtures/src/expected.rs:66

     Summary semver requires new major version: 2 major and 0 minor checks failed
    Finished [   0.150s] fynd-test-fixtures
    Checking fynd-rpc v0.97.7 -> v0.97.7 (no change; assume minor)
     Checked [   0.079s] 196 checks: 196 pass, 49 skip
     Summary no semver update required
    Finished [   0.146s] fynd-rpc
    Checking fynd-rpc-types v0.97.7 -> v0.97.7 (no change; assume minor)
     Checked [   0.136s] 196 checks: 196 pass, 49 skip
     Summary no semver update required
    Finished [   0.223s] fynd-rpc-types
    Checking fynd-client v0.97.7 -> v0.97.7 (no change; assume minor)
     Checked [   0.159s] 196 checks: 196 pass, 49 skip
     Summary no semver update required
    Finished [   0.283s] fynd-client
    Checking fynd-tools-common v0.97.7 -> v0.97.7 (no change; assume minor)
     Checked [   0.071s] 196 checks: 196 pass, 49 skip
     Summary no semver update required
    Finished [   0.118s] fynd-tools-common
    Checking erc20-overrides v0.97.7 -> v0.97.7 (no change; assume minor)
     Checked [   0.072s] 196 checks: 196 pass, 49 skip
     Summary no semver update required
    Finished [   0.109s] erc20-overrides