69 lines
2.8 KiB
Markdown
69 lines
2.8 KiB
Markdown
# Source Internals
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## Purpose
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This document covers Scriptorium-owned source locations and the restricted HTTP
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artifact reader. Prompt, profile, schema, and ordinary artifact semantics are
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owned by the tagged
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[Promptkit format reference](https://gitea.maximumdirect.net/eric/promptkit/src/tag/v0.1.0/docs/formats.md).
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## Application Source Locations
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`internal/config` resolves `prompt_dir`, `profile_dir`, and `schema_dir` from
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Scriptorium defaults, configuration files, and CLI overrides.
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`internal/adapter/cli` passes those paths into `promptkit.Config` when
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constructing the engine.
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Scriptorium does not search, parse, validate, or overlay framework source files
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itself. Promptkit owns prompt selection, profile built-ins and overlays, schema
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resolution, ordinary file artifacts, and the related error identities.
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The [configuration reference](../config.md) owns Scriptorium's source-location
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fields and precedence. Maintained files under `examples/` are application
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inputs that use Promptkit's tagged formats.
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## Restricted HTTP Artifact Reader
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`internal/adapter/http` implements `promptkit.ArtifactReader` for HTTP
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requests. The `serve` path injects it with
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`promptkit.WithArtifactReader`, replacing Promptkit's ordinary reader for
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inbound HTTP inputs.
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The reader:
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- accepts inline references without an artifact root;
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- denies file references when no root is configured;
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- resolves relative paths below the configured root;
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- accepts absolute paths only when they are lexically within that root;
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- rejects lexical traversal outside the root;
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- applies the configured file byte limit, with zero meaning unlimited;
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- preserves content type, body, size, hash, name, and URI metadata; and
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- honors context cancellation.
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Containment is lexical and does not resolve symlinks. The operating system
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follows symlinks after the check. The [HTTP API](../api.md) owns observable
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request outcomes, and [operations](../operations.md) owns safe deployment
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permissions and root selection.
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Reader errors remain identifiable after Promptkit wraps them as artifact-load
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failures, allowing the HTTP adapter to preserve Scriptorium status and error
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codes.
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## Verification And Change Recipe
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Inspect:
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- `internal/config/config_test.go`
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- `internal/adapter/cli/run_test.go`
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- `internal/adapter/http/artifact_reader_test.go`
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- `internal/adapter/http/handler_test.go`
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When changing an application source location or HTTP artifact policy:
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1. preserve strict configuration precedence and the Promptkit public boundary;
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2. keep containment and size policy in Scriptorium;
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3. update focused configuration, reader, and handler tests;
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4. update the [configuration](../config.md), [HTTP](../api.md), and
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[operations](../operations.md) contracts as applicable; and
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5. do not duplicate Promptkit loaders, formats, or ordinary artifact behavior.
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