Add a global event id

[Lan2u]

The ability to have a global ordering of events is useful because it better lines up with the way the humans who use the system think. Having versions split by resources adds difficulty when an event spans multiple 'resources'. It also puts excess weight onto the selection of said resource -> an issue in an open source code base with differing maintainers over the years.

Global ordering can be a problem when working at a large distributed scale however:

• it is extremely unlikely this system will ever deal with anything close to 'large'
• even in large distributed systems having a notion of universal ordering is very useful because it better relates to how humans think. Mistakes in this global ordering can be corrected after the fact in a way that is much easier to reason about

We already effectively have a global ordering because of the rowid in sqlite however we are better to have our own indexed column for this rather than relying on an implementation detail -> particularly if we want to allow 'deleting' events.

[chatgpt-codex-connector]

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