* fix(native-chat): keep the attachments on a Claude turn that pasted images
A Claude turn carrying pasted images reached native chat with no images at all —
no thumbnails on mobile, and not even an attachment chip on desktop. Nothing
showed that the message had any.
Both carriers were being dropped:
- Claude records the paths in a companion turn marked `isMeta`, holding one
`[Image: source: <path>]` text block per image. The decoder treats an `isMeta`
user row as injected, filters it down to tool-result blocks, and returns null
when none remain — so the whole row went away.
- The prompt row's own `image` blocks are `{source: {type: 'base64'}}`, which
carry no url or path, so `imageRefBlock` drops them too.
With the companion gone, `isImageSourceUserTurn` could never fire and the fold in
`normalizeImageTranscriptMessages` was unreachable on the Claude path.
Surveying every transcript under `~/.claude/projects`: 238 of 241 image-source
rows are `isMeta`, across every versioned release (2.1.220 through 2.1.237); the
3 that are not carry no version field at all. 38 of those rows hold more than one
content block, which also defeated the single-block rule in
`isImageSourceUserTurn`.
Let image-source text survive the injected-turn filter, and recognize a turn
whose blocks are *all* markers rather than only a lone one. An ordinary injected
turn (a skill preamble, a compact summary) is still dropped, and a turn that
mixes prose with a marker is still not an image-source turn.
Carrying the paths keeps the payload small; decoding the base64 instead would put
hundreds of KB per image on the wire to mobile.
* fix(native-chat): preserve image companion ordering
* fix(native-chat): keep image companions turn-local
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Co-authored-by: Merge Sim <sim@local>