feat(opencode): agent-driven context editing with CAS, edit graph, and focus agent#1
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feat(opencode): agent-driven context editing with CAS, edit graph, and focus agent#1
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A fork of anomalyco/opencode that adds surgical, reversible context editing with content-addressable storage and a conversation history graph. New capabilities: - CAS (SQLite): content-addressable store preserving original content - Edit operations: hide, unhide, replace, annotate, externalize - Edit graph: DAG of edit versions with branching and checkout - Focus agent: hidden post-turn agent that parks off-topic side threads - Side threads: project-level deferred findings (SQLite) - Objective tracker: extracts and tracks the user's goal - Tools: context_edit, context_deref, context_history, thread_park, thread_list - Plugin hooks: context.edit.before / context.edit.after - CI: stripped to test + typecheck on ubuntu-latest (no third-party runners) 13 new files, 8 modified files, ~1365 lines of new code. All 1310 existing tests pass.
- Use SessionID.make(), MessageID.make(), PartID.ascending() instead of plain strings for branded type safety - Add context.edit.before/after hooks to plugin Hooks interface - Wire Plugin.trigger() calls in context-edit operations
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…d focus agent (#1) * feat: Frankencode — agent-driven context editing on top of OpenCode A fork of anomalyco/opencode that adds surgical, reversible context editing with content-addressable storage and a conversation history graph. New capabilities: - CAS (SQLite): content-addressable store preserving original content - Edit operations: hide, unhide, replace, annotate, externalize - Edit graph: DAG of edit versions with branching and checkout - Focus agent: hidden post-turn agent that parks off-topic side threads - Side threads: project-level deferred findings (SQLite) - Objective tracker: extracts and tracks the user's goal - Tools: context_edit, context_deref, context_history, thread_park, thread_list - Plugin hooks: context.edit.before / context.edit.after - CI: stripped to test + typecheck on ubuntu-latest (no third-party runners) 13 new files, 8 modified files, ~1365 lines of new code. All 1310 existing tests pass. * fix: type safety for branded IDs and plugin hooks - Use SessionID.make(), MessageID.make(), PartID.ascending() instead of plain strings for branded type safety - Add context.edit.before/after hooks to plugin Hooks interface - Wire Plugin.trigger() calls in context-edit operations * ci: add pre-commit hooks for typecheck, tests, and conventional commits --------- Co-authored-by: Adrian Mârza <adi11235 at gmail dot com>
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Issue for this PR
N/A — founding feature for the Frankencode fork.
Type of change
What does this PR do?
Adds agent-driven context editing to OpenCode. Agents can surgically edit their own conversation context — hiding stale tool output, replacing incorrect statements, externalizing verbose content to a content-addressable store — while preserving all original content in a git-like versioned DAG. A focus agent runs post-turn to keep conversations on-topic by parking side discoveries.
Components:
cas_objecttable stores original content by SHA-256 hash. Atomic with part updates viaDatabase.transaction().hide,unhide,replace,annotate,externalizewith ownership validation, budget enforcement (max 10/turn, 70% cap), recency protection (last 2 turns immutable).edit_graph_node+edit_graph_headtables model edit history as a DAG with parent pointers, named branches, checkout, fork.OPENCODE_EXPERIMENTAL_FOCUS_AGENT=1.side_threadtable for deferred discoveries that survive across sessions.context.edit.before/context.edit.after.New tools:
context_edit,context_deref,context_history,thread_park,thread_listNew files: 13 new files, 8 modified, ~1365 LOC. All paths under
packages/opencode/src/.How did you verify your code works?
bun test)bun turbo typecheck— all 13 packages)Screenshots / recordings
N/A — backend/tooling change, no UI modifications.
Checklist