Ogham 0.3.0

Added

• AgentPolicy::protected_tail_tokens, an optional token-budgeted suffix
  guard for coding-agent transcripts. When set, Ogham keeps every message
  overlapping the estimated trailing token window byte-for-byte across agent
  clearing and budget enforcement; None preserves 0.2.x behavior.

Changed

• Relaxed the rusqlite dependency requirement to >=0.38, <0.41; the
  workspace test suite passes at both range edges.

Ogham 0.2.2

Changed

• Replaced a machine-specific path in a golden-test fixture and
  genericized references to a downstream project in docs and doc
  comments. No behavior changes.
• First version available on crates.io: the 0.2.1 packages were
  deleted from the registry before this release and were never
  generally consumed.