feat(extensions): update pg_textsearch to 1.3.1

[f0rr0]

Summary

• update the pinned pg_textsearch source from 0.6.1 to 1.3.1 and regenerate its catalog, legal, mobile, WASIX, and release metadata
• add manifest-driven native qualification covering the real 0.6.1 → 1.3.1 upgrade and the complete 71-test upstream PGXS suite, with target-inventory drift detection
• replace Windows source rewriting with a product-owned, content-addressed MSVC patch recipe that validates the exact source pin, build inputs, installed SQL/control files, ABI layouts, and exports before compiling
• strengthen exact-candidate runtime coverage with BM25 mutation, merge, physical backup/restore, fresh-process writes, and tombstone-sensitive assertions across supported JavaScript hosts
• make exact-extension release metadata product-local and keep WASIX fingerprints limited to inputs that can affect WASIX bytes

Architecture

Qualification and packaging remain generic: extension-specific policy is declared in the extension manifest and product-owned recipe files. The Linux runner evaluates upstream Make targets rather than maintaining a copied test list, while the Windows producer applies a pinned patch instead of rewriting upstream sources in place. Release consumers read neutral product metadata rather than depending on an SDK-owned catalog.

Correctness and compatibility

• source tag: v1.3.1 at 578ff529894992fb9e67cae4c69424e65c84868e
• upgrade fixture: v0.6.1 at 07936f7c, including an existing BM25 index, ALTER EXTENSION UPDATE, post-upgrade writes and merge, restart, and dump/restore
• upstream suite: all 71 PGXS regression targets, with declared exclusions and aggregate targets checked against the evaluated Make target database
• Windows recipe: exact source/control-version guards plus persisted ABI layout and export contracts; patch application is rooted independently of any enclosing worktree

Validation

• PostgreSQL 18 Linux x64: real 0.6.1 → 1.3.1 upgrade passed
• upstream PGXS regression suite: 71/71 passed
• declarative Windows patch applies cleanly inside an enclosing Git worktree, materializes added files, and matches upstream Makefile OBJS/DATA
• exact-candidate consumer suite: 41/41 passed
• canonical release gate: 1,598 passed, 15 host-specific skips, 0 failures (18,032 assertions across 208 files)
• extension model, source-pin, artifact-fingerprint, release-semantic, and CI-graph checks passed

Hosted CI passed for exact commit aba1717de25025e002aa71b0421617dada208cc2: 80 jobs succeeded, one intentional job was skipped, and none failed.