HEIC/HEIF sources use Display P3 color primaries. Without
colorspace=bt709 the mjpeg encoder treated P3 values as sRGB,
producing warm/oversaturated output. Also bake EXIF Orientation
tag into pixels so saved JPEGs are canonically oriented.
- Extract orientation from exif-reader and pass through all
ffmpeg thumbnail paths (small, large, xlarge previews)
- Add shared build_image_thumb_filter() for the 200px path
- Add rotation + colorspace=bt709 to large/xlarge ffmpeg paths
Changed last_fork.clone() to last_fork.take() in render_tree_path
for both assistant and user branches. This prevents fork_info from
propagating to every downstream message, ensuring the chip appears
only at the actual divergence point in the conversation tree.
Rewind & Regenerate resends the identical question, so both branches'
first child matched and every picker option read the same. Snippets now
walk the branches' visible messages (tool scaffolding skipped) in
lockstep and preview the first position where the contents diverge; a
branch that runs out beforehand falls back to its own last message.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
ForkInfo now carries the divergence node's id, and the branches endpoint
accepts node_id + viewing_branch_id to return only the position-ranked
sibling branches at that fork (snippets taken from after the divergence,
skipping tool scaffolding) instead of every leaf in the tree. Options in
the same subtree as the viewing leaf anchor to that leaf so clients can
reliably identify "the branch I'm on". Tree-wide listing is unchanged
when node_id is absent.
- llm_client: descendant_leaves + branch_options_at helpers; optional
position rank on BranchLeafInfo.
- insight_chat: ForkInfo.node_id set during render_tree_path; get_branches
takes the scoping params.
- handlers: dedicated ChatBranchesQuery; unknown node_id maps to 400.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Store chat history as a tree in training_messages instead of a flat
array. Rewind now sets active_leaf_id to the target node rather than
truncating, so discarded paths survive as alternate branches. Fork
indicators ("X/Y") mark divergence points and let the client load or
switch to alternate paths.
- llm_client: StoredChatNode/ChatHistoryStore with tree traversal
helpers (path_to_leaf, children_of, fork_at_node, leaves*, etc.) and
from_flat_array for backward-compatible reads of the old flat format.
- insight_chat: load_history/chat_turn/rewind_history operate on the
tree; new switch_branch and get_branches. render_tree_path walks every
node (including non-rendered tool-dispatch nodes) when computing fork
info, so a fork whose diverging child is a tool call still surfaces on
the following rendered message.
- handlers: GET /insights/chat/branches, POST /insights/chat/switch-branch,
and a branch_id param on the history endpoint.
Backward-compatible: flat arrays are converted to a tree lazily on read.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Cameron Cordes