[vector store 1/12] Remove per-project filterable properties (speedkick)

[edwinyyyu]

Purpose of the change

A project could declare properties_schema, a set of caller property keys with types, on its long-term memory configuration; the event backend merged it into the vector store collection's indexed schema and rejected filters on any other m.<key>. That let a tenant create database resources (indexes, columns) by naming them in a request, which is what forced per-collection native resources named by a hash of their schema on the backends that limit them.

The option is removed from the server configuration, the project API and the memory-configuration API, the Python SDK, the sample configurations, the configuration docs and the OpenAPI document. A filter may name any m.<key>; the stores evaluate it on the properties they hold. What a store indexes is decided by the deployment, not per project.

A breaking API change on speedkick.

Stack

Slice 1 of 13, every PR targeting speedkick; merge bottom-up.

#	PR	change
1	#1606 (this PR)	Remove per-project filterable properties
2	#1621	Route filters on undeclared keys to the segment store
3	#1622	Create a session's storage with the session, never on a request
4	#1623	Make the examples that write to a project create it first
5	#1624	Make no memory request create a project
6	#1625	Remove open-or-create and close from both stores
7	#1626	Rename logical collection to partition, and open to get, on both stores
8	#1627	Make a vector store one collection, with string-keyed partitions
9	#1628	Make a vector store filter only on the properties it declares
10	#1629	Let a deployment declare the properties a vector store indexes
11	#1630	Bound every request to a remote vector store by a configured timeout
12	#1618	Let a deployment tune a Qdrant collection's HNSW, optimizers and quantization
13	#1616	Close the filter union, and make negation the complement on every backend

This PR's own change is its last commit, dc1e757f (23 files changed, 12 insertions(+), 384 deletions(-)); under it, 093652b4 regenerates docs/openapi.json under the locked FastAPI (ValidationError gains input and ctx), so this and every later slice's diff of that file shows only what it changes. Sits directly on speedkick; #1621 is stacked on it.

Verification

ruff check, ruff format --check, ty check (two pre-existing spacy diagnostics), pytest packages/server/server_tests packages/client/client_tests: 2173 passed, 3 skipped, on this branch.

🤖 Generated with Claude Code

https://claude.ai/code/session_01ESpWYTmCR7X3bJEpoA8SAn