Merge from upstream

[akashlevy]

No description provided.

[greptile-apps]

Greptile Summary

This PR merges upstream timing, property, and build changes. The main changes are:

• Refactored incremental graph-delay propagation and traversal.
• Added scene and mode properties, filters, and Tcl commands.
• Updated graph mutation, cell replacement, and CRPR handling.
• Consolidated Linux and macOS CI coverage.

Confidence Score: 4/5

Incremental timing invalidation and scene-property lifecycle handling need fixes before merging.

• Load-slew-only updates can leave downstream timing arrivals stale.
• Deleted scenes can leave property values that attach to newly allocated scenes.
• The remaining graph, Tcl, and CI changes have no identified blocking issue.

dcalc/GraphDelayCalc.cc and include/sta/Property.hh

Important Files Changed

Filename	Overview
dcalc/GraphDelayCalc.cc	Refactors incremental propagation but can miss search invalidation for load-slew-only changes.
include/sta/Property.hh	Adds mutable per-object properties keyed by raw object addresses without lifecycle cleanup.
search/Property.cc	Implements scene and mode property registration, coercion, storage, and lookup.
graph/Graph.cc	Corrects fanin traversal, initializes vertex outputs, and adds load and BFS state helpers.
search/Sta.cc	Updates endpoint invalidation and cell-replacement handling for non-wire edges.
tcl/Sta.tcl	Adds filtering and wildcard defaults for scene and mode queries.
.github/workflows/ci.yml	Consolidates native Ubuntu, CentOS 7 container, and macOS build coverage.

_{Reviews (1): Last reviewed commit: "Merge from upstream" | Re-trigger Greptile}

[greptile-apps]

Load Slew Changes Skip Invalidation

When recalculation changes only a load slew, annotateLoadDelays() no longer contributes that change to delay_changed. The driver-level observer is therefore not notified, while the new local notification covers only wire-delay updates, so incremental timing can retain stale downstream arrivals.

[greptile-apps]

Deleted Scenes Retain Properties

Property values are stored under raw object addresses, but scene deletion has no matching cleanup for this map. If a later scene reuses a deleted scene's address, it inherits values that were never set on it, causing get_property and scene filters to return incorrect results.