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Remove the in-repo libpanto sources and binding projects from pantograph.
Consume libpantograph through the Zig package URL at
code.tjp.lol/libpantograph.git, including the Lua module artifact used by
CLI extensions.
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Teach provider config and auth resolution about the Codex Responses
dialect, including user-facing `style = "openai_responses"` with
`dialect = "codex"`. Serialize and parse Responses traffic with
provider-specific reasoning replay, assistant phase metadata, and robust
function-call assembly keyed by `output_index` so streamed tool inputs
survive proxy quirks and empty terminal payloads.
Also persist thinking origins and message metadata across sessions, add
the Anthropic interleaved-thinking header switch, write per-session
debug logs, and improve the TUI and scripts for inspecting tool output
and session costs.
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Add the OpenAI Responses API wire dialect (openai_responses APIStyle +
OpenAIResponsesConfig), a request serializer (instructions/input items,
flat function tools, reasoning, store:false, include encrypted reasoning),
and a streaming state machine over the typed response.* SSE events mapping
to the shared block model. Wire dispatch, buildProviderConfig, the C-ABI
free switch, and the reasoning selectors. Ship a commented Codex example in
the default config.
Implemented from the Responses API docs + the open-source Codex client and
covered by fixture tests; live verification against a ChatGPT plan is still
required (documented).
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Add src/auth_manager.zig (turn-time resolution: load→login→refresh→exchange→
build credential, patch live config) and `panto auth status|login|logout`
subcommands with a line-based device-code presenter. Add config_file.loadFromString.
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Implement the device-authorization flow for both dialects (GitHub `token`
direct-poll; Codex `codex` poll→authorization-code→PKCE exchange), refresh_token
grant, Copilot secondary token exchange, JWT exp parsing, Codex account-id
extraction, and pure credential-building/refresh predicates. Adds a Presenter
hook for rendering the device-code prompt. Exported from public.zig.
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Add libpanto http_helper (non-streaming request/response over the global
client, plus dotted-JSON-path readers) and token persistence in auth.zig
(load/save/delete TokenSet under an embedder-chosen auth dir, owner-only
files). Add $PANTO_HOME/auth to the panto_home layout.
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Replace provider-level api_key/api_key_env_var with named auth sessions:
providers now reference `auth = "<name>"` and credentials live under
`[auth.<name>]`. Adds the libpanto auth type surface (AuthConfig, TokenSet,
ResolvedCredential), a Header type and provider `extra_headers`, and rewires
the CLI config loader (parse [auth.<name>], require auth=, providers always
survive, eager api_key resolution). Updates the shipped default config.
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Conversation.addUserMessage now takes a []ContentBlock (symmetric with
addAssistantMessage). Introduce a thin addUserText wrapper in agent.zig
for the plain-text case and update every call site in agent.zig and
anthropic_messages_json.zig accordingly.
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Push the API-shaping we'd done in the public facade down into the internal
types, collapsing the wrappers:
- Stream: rename phase->state, Phase->State; underscore-prefix the internal
fields (_agent/_queue/_response/_start/_persisted/_pending_error). state
is the one intended-public field. public.zig now aliases Stream; run
returns *Stream.
- Agent compaction: pure transform compact()->private _compactInPlace;
compactAndPersist()->compact() (the public name, persists).
- Agent system prompt: addSystemMessage(text,mode) split into
addSystemMessage(text) + setSystemPrompt(text) over a private
_persistSystemMessage.
- UserMessage moved off Agent to module scope.
- Underscore-prefix pure-internal Agent fields: _open_stream_fn,
_auto_compacted, _retry_prng.
The Agent facade is now pure 1:1 forwarders; it stays a wrapper only because
init heap-pins the inner (copyable, move-safe handle) and conversation()/
sessionId() are accessors. Conversation and Stream are plain aliases.
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A facade that forwards every method 1:1 is worse than paring the real type
down to the intended surface and aliasing it. conversation.Conversation's
interface is already the public surface we want (init/deinit, the
add*/replace* builders, and messages/allocator as plain data fields), so
public.zig now aliases it straight through and Agent.conversation() returns
a borrowed *Conversation for in-place surgery. Drops the ConversationData
alias and the pointer-wrapper.
Merged addAssistantMessageWithUsage into addAssistantMessage(blocks, ?usage)
on the real type (separate method deleted), so the alias has the intended
one-method shape; all call sites updated.
Only Agent and Stream remain true facades -- they have genuinely-internal
fields plus API-shaping renames (Stream.phase->state, Phase->State) an alias
can't express.
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Close the gap that forced the CLI to import internal libpanto namespaces,
then delete the transitional re-exports. The CLI now uses only the curated
public surface.
Additions to the public Agent facade:
- init/deinit (heap-pin the inner; the handle is a copyable value).
- addSystemMessage (.append) and setSystemPrompt (.replace).
- compact(override_system_prompt, extra) falling back to the config prompt.
- sessionId() accessor.
CompactionConfig gains compaction_prompt, which owns the compaction system
prompt for both auto-compaction and the explicit compact() default; the
Agent.compaction_system_prompt field is deleted. ConversationData is the
public name for the owned conversation value type (Session.load returns it,
Agent.init adopts it), distinct from the borrowed Conversation handle.
Agent.addSystemMessage/setSystemPrompt are kept on Agent (they persist with
the SystemMode) rather than dropped as the plan first proposed.
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Move the CLI off the internal libpanto module namespaces onto the curated
public API: data-type aliases (Config family, Message/MessageRole/
effectiveSystemBlocks, Event, Pricing/PricingRegistry, the session seam,
FileSystemJSONLStore, ContentBlockType), process lifecycle (panto.init/
deinit), and ResultParts.fromText/fromTextOwned/deinit in place of the
freestanding textResult/ownedTextResult/freeResultParts.
The CLI remains on two flagged internal namespaces, panto.agent and
panto.conversation: it is a deep embedder that drives the loop below the
curated Agent/Conversation facades (system-prompt seeding through the
agent, compaction_system_prompt, the open_stream_fn test seam, standalone
Conversation values, compactAndPersist). These stay re-exported from
public.zig as a documented deep-embedder escape hatch; trimming the
transitional block removed every other internal re-export.
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public.zig is now the sole exported root (build.zig points the panto module
at it). It defines the curated public API allowlist: behavioral facades
(Agent/Stream/Conversation wrapping a pointer to the heap-pinned internal),
the ResultParts struct, Pricing, the session seam, and data-type aliases
for the Config/Conversation/Event families.
A clearly-marked transitional block re-exports the internal module
namespaces and the freestanding result-part helpers the panto CLI still
imports directly; Phase 4 trims these as the CLI migrates onto the curated
surface. Stream.Phase is now pub so State can alias it. The refAllDecls
test contract moved from root.zig into public.zig.
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