DEV-6449: Add the static player.show Berry plugin

[immakermatty]

Outcome

• publish the canonical copy-ready Project Berry plugin at data/v2/examples/player-show-complete-cue-tracks/player.be
• replace the unreleased A/B/generation prototype with one static player.show and deterministic per-ID SEB chains
• keep ID255 automatic, local IDs explicit, and all pause/resume/seek/rewind/loop/checkpoint policy in optional Project Berry
• include a public synthetic corpus plus host-Berry lifecycle and hard TNGL-size gates
• pin compatibility to firmware 0.12.11 and WASM DEBUG_UNIVERSAL_0.12.11_20260808

How authors use it

Copy player.be into the Controller Project as a Berry Script block and call Player({"base":"player","ids":[1]}). Studio links to this canonical example. Upload writes deterministic NetworkStorage files only; it does not install or replace the Project plugin.

The supported operator flow is pause, upload, wait for ordinary NetworkStorage propagation, rewind, then play. Hot update, generations and simultaneous writers for the same base are intentionally outside v1.

Dependencies

• stacked on DEV-6448: Add SEB scene and Track examples #4
• firmware SEB/timeline primitives are merged in firmware #29 and firmware #30
• static NetworkStorage-source SEB overload is the DEV-6449 firmware follow-up
• Studio pivot is the active DEV-6449 monorepo PR
• Creator Kit DEV-6455: add Spectoda Creator Kit release candidate #6 will consume this exact source after this PR is stable

Verification

• host Berry lifecycle: PASS for per-ID filtering, pause/resume, projection retry, missing-file retry, seek, 24-hour wrap, delayed catch-up and Cue held through pause
• TNGL size gate: 3,789 / 4,096 bytes
• Examples production build: PASS
• canonical firmware mirror: byte-for-byte equal
• safe ASCII base and 23-byte generated filename contract: covered
• focused auto-review: safe-base finding fixed; no accepted architectural expansion
• git diff --check: PASS

No merge, release, deployment, WASM publication or customer Controller mutation is part of this PR.

[spectoda-dev]

Exact-head Productionspace review: 900bafc9ecddaf7d7fd3acf0b30ebf8d27440655.

APPROVED.

Verified locally:

• Examples v2 tsc -b + Vite production build pass.
• Public A/B corpus is decoded with exact @spectoda/js/v012 Player Bundle codec: all 7 checked SPM/SPT artifacts pass fingerprint and format validation.
• Source review confirms the Berry Player validates namespace/local IDs, reads bounded ranges, honors preferred/fallback A/B activation, uses one SEB.land call per plugin turn, and keeps SPM-last publication semantics.
• git diff --check passes.

Execution limit recorded: the repo ships a host-Berry lifecycle smoke and hardware DevKit smoke source, but this checkout has neither the host Berry interpreter nor ESP/WASM toolchain/hardware. No source defect was found; that runtime path remains unexecuted locally. The companion release chain must still wait for firmware #29 P1 executable QA coverage.

[immakermatty]

Exact-head re-review requested for b8080e7. The existing approval targets an older commit. This head is the single editable Project Berry plugin source and pins DEBUG_UNIVERSAL_0.12.11_20260808.