feat(wirings): capstone demo composing all 4 tier wirings in one pipeline (closes the #6→#9 stack)

[estebanzimanyi]

Capstone follow-up on the PR #6 → #7 → #8 → #9 tier-wirings stack. Single Flink DataStream job that composes all four tier wirings in a coherent end-to-end pipeline — proves the wirings compose into a realistic pipeline shape, not just work in isolation.

Pipeline

Each stage uses one tier-wiring class:

Stream A (vehicles)                Stream B (region queries)
     │                                  │
① MeosStatelessFilter                   │   ← keep events in regions of interest
     │                                  │
② MeosBoundedStateMap                   │   ← per-vehicle running tbox union (byte[] state)
     │                                  │
③ MeosWindowedAggregate                 │   ← per-vehicle 30s tumbling tbox summary
     │                                  │
     └──────────────┐            ┌──────┘
                    ↓            ↓
④ MeosCrossStreamJoin                       ← interval-join on regionId, ±1m bound
                    ↓
              output

Answers: "for each region, which vehicles had an aggregate trajectory (running union) overlapping the region's query bbox during the latest 30-second window?"

Tier-per-stage breakdown

Stage	Wiring	Tier contract demonstrated
① Filter	MeosStatelessFilter	Per-event predicate, no state
② Running union	MeosBoundedStateMap	MEOS handle persisted across events as byte[] state (checkpoint-safe)
③ Window summary	MeosWindowedAggregate	Window-close-only aggregation; no handle persistence across windows
④ Region overlap	MeosCrossStreamJoin	Interval-join, same-key pairing, time-bounded match

File / compile

• Single new file: demo/MeosAllTiersCapstoneDemo.java (~215 lines)
• Touches no existing file
• Locally compile-verified: 146 .class files (145 from PR feat(wirings): cross-stream tier DataStream wiring + demo — completes the 4-tier matrix (stacks on #8) #9 base + 1 new demo)

Stacking + closure

This PR closes the PR #6 → #9 wiring stack with the composite-demo capstone. The 5-PR stack collectively delivers:

PR	What it adds
PR #6	MeosStatelessMap + MeosStatelessFilter (stateless tier — 804 methods)
PR #7	MeosBoundedStateMap (bounded-state tier — 797 methods)
PR #8	MeosWindowedAggregate (windowed tier — 161 methods)
PR #9	MeosCrossStreamJoin (cross-stream tier — 140 methods)
PR #10 (this)	Capstone demo composing all 4 in one pipeline

Cumulative wirings-layer coverage = 2,097 of 2,097 emitted methods (100%) wirable through 5 generic classes; this PR proves they compose.

[estebanzimanyi]

Superseded by the Path-B consolidation: the former 18-deep stack is collapsed into two reviewable topical PRs on top of the merged scaffold — MEOS integration #30 → benchmark #31 — each one clean squashed commit with the generated-facade bulk, dead family-flag profiles, committed target/ artifacts, and invented synthetic corpus removed. Closing as folded into #30/#31.