Sync ako/mxcli: describe performance and round-trips on MPR v1, git notes, test --db-type

[ako]

Syncs ako/mxcli:main into mendixlabs/mxcli:main: 15 commits since #1336, landed in the fork through PRs ako#1035–ako#1053.

Describe round-trips on large real-world projects

Most of these were found by describing every flow of a 1,875-flow MPR v1 project.

• describe microflow no longer takes minutes when a flow calls a rule. One IsRule lookup resolved the module of every rule in the project and took 53 s on MPR v1. The rebuild ran 9 times, so describe went past a 5-minute timeout. Rule lookups are now memoised and compare the bare name first.
• MPR v1 typed listings filter on $Type before reading unit blobs, through a type index peeked from each blob's first 256 bytes. Previously every listing read the whole .mpr.
• An unspaced minus after a name is subtraction: $P/Offset-1 and $I/OEE-$B/OEE lexed as hyphenated names, so the describe output did not parse.
• A blank call argument describes as Param = nothing, which parses and round-trips Studio Pro's Argument: "". Before, describe printed TraceID = ,, which doesn't parse.
• MDL049 accepts $obj/Assoc/Module.Entity as an object value, the form Studio Pro writes. 42 untouched flows were refused, so exec would not re-apply their own describe output. Measured on 10.24.15 and 11.13.0.

Pages / OData

• changedBy/Name and owner/… in widget attribute paths resolve through System.changedBy / System.owner (CE1613, DataGrid 2 column over a system association (changedBy/Name) is written as attribute 'Entity.changedBy/Name' (mx check CE1613; check/exec pass), and no qualified spelling is accepted #1338).
• Cross-module associations are published as PublishedAssociationEnd on an OData entity (CE1613, Published OData entity: exposing a cross-module association writes a PublishedAttribute instead of a PublishedAssociationEnd (mx check CE1613; check/exec pass) #1335).

Commands

• mxcli git note writes the refs/notes/mx_metadata note Studio Pro attaches to every commit, for commits made with plain git (Mxcli should teach the agent how to work with mx teamserver: use server branches, add commit annotations. #1337). A teamserver-git skill comes with it.
• mxcli test --db-type postgresql|hsqldb, so a --local test suite runs without PostgreSQL (feat(test): add --db-type so a suite can run on the file database #1274).

Robustness / CI

• run stop and session lookups tolerate the btime truncation that made the pid-reuse guard miss a run's own leader on some VMs.
• make test and the conformance targets have an explicit -timeout, and a lint guard (run in CI) refuses any go test without one (make test has no -timeout, so mdl/linter trips Go's 10m default and reads as a failing test #1291).
• A test pins exec's pre-flight refusal of a grant naming a missing entity or role (check --references passes an entity grant whose entity or module role does not exist; exec then refuses it after earlier statements were written #1333, already fixed by the previous sync).
• Dependabot bumps: source-map-js 1.2.2, shell-quote 1.12.0