- Converted systemPrompt APIs and state types to ordered `string[]` across agent, AI, and coding-agent surfaces.
- Added `normalizeSystemPrompts` and applied it to context normalization before building provider request payloads.
- Updated AI providers to emit separate normalized prompt blocks/messages instead of a single merged system prompt.
- Removed dedicated `projectPrompt` state and remapped that context into system-context buckets in session, dump, and token accounting.
- Aligned tests and changelogs to pass and assert `systemPrompt` as arrays with ordered prompt semantics.
Drives AgentSession + Agent + BashTool end-to-end through the patched
pi-natives binding. Asserts a spawned child reports its own session id
(setsid was called) and that pipelines still produce both stages'
output. Validated by reverting commands.rs and confirming the test
fails with a named diagnostic before restoring.
can1357