frontend: fail-open Projects/History to samples when store empty

frontend: guard sign-in dead-link in demo (no /api/auth on demo backend)

frontend: Batch 8 (pipeline from real spec) + Batch 9 (runtime de-demo)

frontend: Batch 6 (MatrixHub publish) + Batch 7 (OllaBridge pairing, real account)

frontend: Batch 4 (live run stream) + Batch 5 (real marketplace)

frontend: ship real API reads (Batch 0-3)

deploy: agent-generator@c78c202d16be

deploy: agent-generator@e3ccfd6e80f2

deploy: agent-generator@5d00f305b0e9

deploy: agent-generator@30eac46ce928

deploy: agent-generator@7db7f407453d

deploy: agent-generator@8a0a2a2be5f8

deploy: agent-generator@c51c917b37e7

deploy: agent-generator@84b9d5fae354

deploy: agent-generator@104849063ffb

deploy: agent-generator@e6583c515db3

deploy: agent-generator@7d1a73f24c0e

deploy: agent-generator@22aed0c90a00

deploy: agent-generator@64e243679b44