Fix agent state telemetry and browser action contracts

[MaxBittker]

Summary

• add publication revisions and observation IDs so same-tick messages, dialogs, and combat events remain distinguishable to agents
• expose truthful NPC health/death lifecycle and target-facing state, plus inventory quantity helpers
• make low-level interaction failures explicit and preserve ranged spell dispatch when adjacency routing is unavailable
• serialize browser actions with a bounded, expiring FIFO that preserves reconnect quiescence
• make temporary door evidence session-scoped and expiring
• require target-specific combat evidence and dismiss safe blocking UI before reporting action success

Review follow-up

This version incorporates an independent second-pass review covering same-tick evidence loss, unrelated combat XP attribution, reconnect overlap, stale door blocks, modal ordering, ranged spell routing, and unbounded queued actions.

Validation

• 20 focused state/action/browser tests pass
• 26 pathfinding tests pass
• chat-history and dialog suites pass
• webclient typecheck and production build pass
• root typecheck reaches only the two pre-existing banking fixture nullability errors addressed by Make the agent API self-describing and add regression CI #43
• git diff --check passes

Merge notes

This overlaps the action/type surfaces in #27 and #40 and should be reconciled before those older PRs are merged. Merge the generated API/docs PR #43 after this and the porcelain reliability PR, then regenerate the reference.