Load table schemas lazily and in bulk in Registry

[roxblnfk]

🔍 What was changed

• Registry::linkTable() no longer introspects the table immediately — it only records the database/table pair.
• The first getTableSchema() call loads every pending table per database through Database::getSchemas() (perf(Schema): bulk table introspection (getSchemas) database#265): a constant number of catalog queries per database instead of a full introspection per table.
• On a cycle/database version without getSchemas() the Registry falls back to the old per-table path, so the behaviour is only faster, never different.

How it works

• linkTable() stores schema: null; all linked tables stay pending until a schema is first requested.
• The first getTableSchema() groups pending tables by database and loads each group in one bulk call; entities sharing a table receive the same AbstractTable instance, missing tables come back as STATUS_NEW schemas.
• A table linked after the first load (embedded relations do this) reuses the already loaded instance; only genuinely new tables are fetched.

Why?

Fixing cycle/orm#466: on a remote database with 60–100 ms round-trip latency, schema compilation of hundreds of entities takes minutes because each table is introspected separately. Benchmarked against Postgres with 200 tables (13 columns, 2 indexes, FK each): 1200 queries / 3.7 s per-table vs 6 queries / 0.6 s bulk; at 100 ms RTT that is ~2 minutes vs ~0.6 s.

One behavioural note: introspection errors now surface at the first getTableSchema() call instead of inside linkTable().

Checklist

• Requires cycle/database ^2.23 (perf(Schema): bulk table introspection (getSchemas) database#265) for the bulk path; older versions work through the per-table fallback.
• How was this tested:
  • Unit tests added (schema sharing, late link, per-table fallback via a LegacyDatabase fixture, error paths)
  • Full suite run locally on SQLite (1017 tests), psalm and php-cs-fixer clean
  • Bulk path benchmarked and verified for result identity against Postgres 12 (docker) with the perf(Schema): bulk table introspection (getSchemas) database#265 branch

[codecov]

Codecov Report

❌ Patch coverage is 93.47826% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 95.09%. Comparing base (cde7e2a) to head (918e0b6).

Files with missing lines	Patch %	Lines
src/Registry.php	93.47%	3 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##                2.x      #83      +/-   ##
============================================
+ Coverage     94.97%   95.09%   +0.12%     
- Complexity      595      602       +7     
============================================
  Files            46       46              
  Lines          1711     1734      +23     
============================================
+ Hits           1625     1649      +24     
+ Misses           86       85       -1     

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.