feat: Add history author/intent metadata and v1 record version (#3205)

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- [x] I am happy for maintainers to push small adjustments to this PR,
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Adds `author` and `intent` to client history records and DB persistence,
including migration/backfill and CLI/daemon propagation.
Introduces V2 record-store history version `v1` while retaining read
compatibility for legacy `v0` records.
Adds `--author` and `--intent` flags to `atuin history start`, plus
`{author}` and `{intent}` format keys for listing/history output.
Updates shell-integration docs for `ATUIN_HISTORY_AUTHOR` and
`ATUIN_HISTORY_INTENT`, and updates related tests/fixtures.
Validated with `cargo test -p atuin-client --lib`, `cargo test -p
atuin-daemon --tests`, `cargo test -p atuin search::inspector`, and
`cargo fmt --check`.

2 files changed, 9 insertions, 1 deletions

diff --git a/crates/atuin-daemon/src/client.rs b/crates/atuin-daemon/src/client.rs
index 05067bda..3b76a680 100644
--- a/crates/atuin-daemon/src/client.rs
+++ b/crates/atuin-daemon/src/client.rs
@@ -103,6 +103,8 @@ impl HistoryClient {
             hostname: h.hostname,
             session: h.session,
             timestamp: h.timestamp.unix_timestamp_nanos() as u64,
+            author: h.author,
+            intent: h.intent.unwrap_or_default(),
         };
 
         Ok(self.client.start_history(req).await?.into_inner())
diff --git a/crates/atuin-daemon/src/server.rs b/crates/atuin-daemon/src/server.rs
index 9622d2b6..826d6191 100644
--- a/crates/atuin-daemon/src/server.rs
+++ b/crates/atuin-daemon/src/server.rs
@@ -69,7 +69,7 @@ impl HistorySvc for HistoryService {
                 )
             })?;
 
-        let h: History = History::daemon()
+        let mut h: History = History::daemon()
             .timestamp(timestamp)
             .command(req.command)
             .cwd(req.cwd)
@@ -77,6 +77,12 @@ impl HistorySvc for HistoryService {
             .hostname(req.hostname)
             .build()
             .into();
+        if !req.author.trim().is_empty() {
+            h.author = req.author;
+        }
+        if !req.intent.trim().is_empty() {
+            h.intent = Some(req.intent);
+        }
 
         // The old behaviour had us inserting half-finished history records into the database
         // The new behaviour no longer allows that.