docs: add entity_lookup + type 3+ scope to limits, events, and jobs skills

[pyramation]

Summary

Updates skill documentation to reflect the entity_lookup and dynamic scope resolution changes from constructive-db PRs #1361 and #1368.

Changes across 5 files in 3 skills:

constructive-sdk-limits:

• Added entity_field and entity_lookup to LimitCounter, LimitAggregate, LimitFeatureFlag param tables
• Added scope param to LimitAggregate (was previously missing — defaulted to hardcoded org)
• Updated scope descriptions from 'app'/'org' to support any provisioned type (data_room, channel, team, etc.)
• New Entity Lookup section explaining FK-based entity resolution with example
• New Type 3+ Scopes section with custom entity type examples
• Updated decision table with data_room examples

constructive-sdk-events:

• Added entity_lookup to EventTracker and EventReferral param tables in SKILL.md
• Added FK-based entity resolution example to event-tracker.md reference
• Added entity_lookup to event-referral.md reference param table

constructive-jobs:

• Added entity_field and entity_lookup to JobTrigger param table

Review & Testing Checklist for Human

• Verify entity_lookup param table entries match the constructive-db node-type-registry definitions
• Confirm Type 3+ Scopes example blueprints are valid JSON

Notes

Related PRs:

• constructive-io/constructive-db#1361 (resolve_entity_lookup helper)
• constructive-io/constructive-db#1368 (dynamic scope resolution)
• feat: sync entity_lookup + dynamic scope resolution from constructive-db constructive#1231 (node-type-registry sync)

Link to Devin session: https://app.devin.ai/sessions/b289975a3ff3427783ec4910814658ee
Requested by: @pyramation

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