diff --git a/AGENTS.md b/AGENTS.md
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+# PROJECT KNOWLEDGE BASE
+
+**Generated:** 2026-02-17
+**Commit:** 475c468
+**Branch:** master
+
+## OVERVIEW
+
+MakerPnP — cross-platform Pick-and-Place machine software for Makers. Pure Rust Cargo workspace (31 crates), using Crux core/shell architecture with egui GUI and CLI frontends.
+
+## STRUCTURE
+
+```
+makerpnp/
+├── common/           # 6 shared utility crates (see common/AGENTS.md)
+├── eda/              # EDA tool integration (eda, eda_units) — DipTrace, KiCad, EasyEDAPro
+├── gerber/           # Gerber file handling (gerber, gerber_viewer_egui)
+├── pnp/              # Core PnP types (Part, Placement, Package, ObjectPath, LoadOut)
+├── planning/         # Assembly planning — 10 crates, largest module (see planning/AGENTS.md)
+├── assets/           # Logos, screenshots
+├── .github/          # CI workflow (rust.yml)
+├── Hacks.md          # Documented hack patterns with identifiers
+└── KnownIssues.md    # Known limitations and workarounds
+```
+
+## WHERE TO LOOK
+
+| Task | Location | Notes |
+|------|----------|-------|
+| Add CLI subcommand | `planning/planner_cli/src/opts.rs` | Uses clap 4.5, add ValueEnum adapters in `common/cli/src/args.rs` |
+| Add GUI tab/dialog | `planning/planner_gui_egui/src/` | See `planning/planner_gui_egui/AGENTS.md` |
+| Add Crux Event | `planning/planner_app/src/lib.rs` | 70+ events in `Event` enum, handle in `update()` |
+| Add EDA tool support | `eda/eda/src/` | Implement parser, add variant to `variantbuilder_cli` |
+| Part/Placement types | `pnp/pnp/src/` | Core domain types shared across all crates |
+| Planning domain logic | `planning/planning/src/` | Pure domain — no Crux, no I/O |
+| Data loading (CSV/file) | `planning/stores/src/` | Aggregates assembly, part_mapper, package_mapper |
+| Rule matching | `common/criteria/src/lib.rs` | `FieldCriterion` trait — exact/regex strategies |
+| i18n translations | `common/i18n/` + GUI `.ftl` files | Based on egui-i18n + Fluent |
+| Gerber rendering | `gerber/` | Uses forked gerber_viewer library |
+
+## ARCHITECTURE
+
+### Crux Core/Shell Pattern
+
+```
+User Input → Event → Core.update() → Effect → Shell → Render
+                ↑                                  ↓
+                └──────── New Event ───────────────┘
+```
+
+- **Core** (`planner_app`, `variantbuilder_app`): Implements `crux_core::App`. Pure functions, no I/O.
+- **Shell CLI** (`planner_cli`, `variantbuilder_cli`): `crossbeam-channel` effect loop. Auto-saves on modify.
+- **Shell GUI** (`planner_gui_egui`): `PlannerCoreService` wraps Core, converts Effect → PlannerAction for egui.
+
+### Dependency Flow (top → bottom, no cycles)
+
+```
+Shells (cli, gui)
+  → Crux Cores (planner_app, variantbuilder_app)
+    → Domain Support (stores, assembly, part_mapper, package_mapper)
+      → Domain Core (planning — pure logic, no I/O)
+        → Shared Types (pnp, eda, gerber, common/*)
+```
+
+### 4 Executables
+
+| Binary | Crate | Purpose |
+|--------|-------|---------|
+| `planner_gui_egui` | `planning/planner_gui_egui` | GUI planner (egui + eframe) |
+| `planner_cli` | `planning/planner_cli` | CLI planner (same Crux core) |
+| `variantbuilder_cli` | `planning/variantbuilder_cli` | EDA → normalized placements |
+| `gerber_viewer_egui` | `gerber/gerber_viewer_egui` | Standalone Gerber viewer |
+
+## CONVENTIONS
+
+- **Formatting**: `cargo +nightly fmt` — max_width=120, chain_width=40, struct_lit_single_line=false, group_imports=StdExternalCrate
+- **Workspace deps**: ALL versions centralized in root `Cargo.toml` `[workspace.dependencies]`. Crates reference via `{ workspace = true }`.
+- **Fork deps**: egui, egui_taffy, egui_ltreeview, egui_deferred_table, gerber_viewer — all forked under MakerPnP GitHub org with specific revs.
+- **Resolver v2**: Required due to `testing` feature flag on dev-dependencies.
+- **CLI adapters**: Internal types → `*Arg` enums in `common/cli/src/args.rs` via `From/Into`.
+- **Test frameworks**: `rstest` (parameterized), `assert_cmd` + `assert_fs` (CLI integration).
+- **Test data builders**: Builder pattern in `tests/common/` — `TestProject`, CSV builders.
+- **Hack documentation**: Document hacks in `Hacks.md` with identifier comment (e.g. `HACK: table-resize-hack`), not scattered TODOs.
+
+## ANTI-PATTERNS (THIS PROJECT)
+
+- **No `as any` / `@ts-ignore` equivalent**: Do not suppress type errors.
+- **No scattered TODO/FIXME**: Use `Hacks.md` and `KnownIssues.md` for tracking.
+- **GUI must run from source dir**: GUI executables require relative asset paths — run from crate directory.
+- **Don't float data-table tabs in debug mode**: Causes panic (egui_dock bug #278).
+- **Single task active**: Only one phase task should be started/incomplete at a time.
+- **PCB changes require project reload**: Save project → close → edit PCB → reopen.
+
+## COMMANDS
+
+```bash
+# Build
+cargo build --release
+
+# Test
+cargo test --verbose
+
+# Format (requires nightly)
+cargo +nightly fmt
+
+# Run GUI (from crate dir)
+cd planning/planner_gui_egui && ../../target/release/planner_gui_egui
+
+# Run CLI
+./target/release/planner_cli --help
+./target/release/variantbuilder_cli --help
+```
+
+## NOTES
+
+- **CI**: GitHub Actions on push/PR to master. Ubuntu. Needs `libdbus-1-dev`.
+- **Edition mix**: Most crates use 2021, newer GUI crates use 2024.
+- **Gerber crates tightly coupled**: gerber_viewer, gerber-types, gerber_parser — ensure only one of each in dependency tree.
+- **chrono over time**: Project chose chrono (13k dependents) over time crate (3k dependents).
+- **License**: TBD (likely GPL3, Apache, or MIT).
diff --git a/common/AGENTS.md b/common/AGENTS.md
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+# COMMON UTILITIES
+
+**Parent:** [Root AGENTS.md](../AGENTS.md)
+
+## OVERVIEW
+
+6 shared utility crates — foundational types and helpers used across all domain crates.
+
+## STRUCTURE
+
+```
+common/
+├── args/       # Primitive argument type (`Arg` enum: Boolean, String, Integer) for i18n
+├── cli/        # CLI utilities: clap parsers, tracing setup, internal→CLI type adapters
+├── criteria/   # Rule matching engine: `FieldCriterion` trait, ExactMatch + RegexMatch strategies
+├── i18n/       # Fluent-based i18n: loads .ftl translations, wraps egui_i18n
+├── math/       # Numeric utilities: angle, decimal, ratio, math operations
+└── util/       # Core utilities: Source enum, sorting, path helpers, dynamic typing, assertions
+```
+
+## WHERE TO LOOK
+
+| Task | Crate | Key File | Notes |
+|------|-------|----------|-------|
+| Add rule matching strategy | `criteria` | `src/lib.rs` | Implement `FieldCriterion` trait — used by `part_mapper` & `package_mapper` |
+| Add CLI arg type adapter | `cli` | `src/args.rs` | Internal domain types → `*Arg` enums (clap ValueEnum) |
+| Add CLI parser | `cli` | `src/parsers.rs` | Clap argument parsers |
+| Configure tracing | `cli` | `src/tracing.rs` | Behind `tracing` feature flag |
+| Add math operation | `math` | `src/ops.rs`, `src/angle.rs` | Angle/decimal/ratio math |
+| Add file source type | `util` | `src/source.rs` | `Source` enum — file/URL abstraction |
+| Add sorting helper | `util` | `src/sorting.rs` | `SortOrder` enum |
+| Add dynamic typing | `util` | `src/dynamic/` | `AsAny` + `DynamicEq` traits — enables trait object equality |
+| Add test utility | `util` | `src/test/` | Behind `testing` feature flag |
+| Add i18n translation | `i18n` | `src/lib.rs` | Loads Fluent `.ftl` files, wraps `egui_i18n` |
+| Add i18n argument type | `args` | `src/lib.rs` | `Arg` enum for Fluent argument conversion |
+
+## CONVENTIONS
+
+- **`testing` feature**: `util/src/test/` gated behind `#[cfg(any(test, feature = "testing"))]` — prevents test utilities from polluting release builds.
+- **Dynamic equality**: `criteria` uses `AsAny` + `DynamicEq` from `util/dynamic/` for trait object equality (`dyn FieldCriterion`).
+- **i18n feature flags**: `i18n` has `json` and `args` features for different Fluent argument conversion strategies.
+- **Edition mix**: `i18n`, `math`, `args` use Rust edition 2024; `cli`, `criteria`, `util` use 2021.
+
+## ANTI-PATTERNS
+
+- Do NOT add domain-specific logic here — these crates are cross-cutting utilities only.
+- Do NOT bypass `FieldCriterion` trait for rule matching — always implement the trait interface.
diff --git a/planning/AGENTS.md b/planning/AGENTS.md
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+# PLANNING MODULE
+
+**Parent:** [Root AGENTS.md](../AGENTS.md)
+
+## OVERVIEW
+
+Assembly planning — 10 crates implementing the Crux core/shell architecture for PCB assembly job management.
+
+## STRUCTURE
+
+```
+planning/
+├── planning/           # Pure domain logic (Project, Phase, Process, Placement) — NO Crux, NO I/O
+├── planner_app/        # Crux Core — implements crux_core::App, 70+ Events, Model, Effects
+├── planner_cli/        # Crux Shell (CLI) — crossbeam-channel effect loop, auto-save
+├── planner_gui_egui/   # Crux Shell (GUI) — egui frontend (see planner_gui_egui/AGENTS.md)
+├── variantbuilder_app/ # Crux Core — EDA file normalization (separate from planner)
+├── variantbuilder_cli/ # Crux Shell (CLI) — DipTrace/KiCad/EasyEDAPro → normalized placements
+├── stores/             # Data source abstraction — CSV/file loading, aggregates assembly+mappers
+├── assembly/           # Assembly variant processing — filters placements by variant rules
+├── part_mapper/        # Part mapping rules engine — matches parts via criteria
+└── package_mapper/     # Package mapping rules engine — matches packages via criteria
+```
+
+## WHERE TO LOOK
+
+| Task | Location | Notes |
+|------|----------|-------|
+| Add new Event | `planner_app/src/lib.rs` | Add variant to `Event` enum + handle in `update()` |
+| Add CLI subcommand | `planner_cli/src/opts.rs` (719 lines) | Clap derive, map to Event in `main.rs` |
+| Add project domain logic | `planning/src/project.rs` (2722 lines) | Pure logic — `Project` struct methods |
+| Add new Phase/Process behavior | `planning/src/phase.rs`, `planning/src/process.rs` | State machine transitions |
+| Add data source | `stores/src/` | Implement loader, register in stores aggregator |
+| Add part/package mapping rule | `part_mapper/src/`, `package_mapper/src/` | Uses `criteria` crate for matching |
+| Add EDA tool support | `variantbuilder_app/src/lib.rs` + `variantbuilder_cli/` | Add parser in `eda/`, wire through app |
+| Placement sorting | `planning/src/placement.rs` | `PlacementSortingItem`, `PlacementSortingMode` |
+
+## DEPENDENCY FLOW
+
+```
+Shells (planner_cli, planner_gui_egui, variantbuilder_cli)
+  → Cores (planner_app, variantbuilder_app)
+    → stores
+      → assembly, part_mapper, package_mapper
+        → planning (pure domain)
+          → pnp, eda, common/*
+```
+
+No cycles. All dependencies flow downward.
+
+## CONVENTIONS
+
+- **Crux pattern**: Core is pure — all side effects via `Effect` enum, handled by Shell.
+- **CLI auto-save**: Shell checks `view.project_modified` / `view.pcbs_modified` after every Render effect.
+- **Sequence tests**: `planner_cli/tests/planner.rs` (4324 lines) — uses static mutex + sequence numbering for ordered test execution.
+- **Test builders**: `tests/common/` — `TestProject`, `LoadOutCSVBuilder`, `PhasePlacementsCSVBuilder` etc.
+- **ObjectPath**: Unified locator format `/pcb_instance/pcb_unit/ref_des` (e.g. `/1/2/R1`).
+- **Process state machine**: Process → Operations → Tasks, three-level status tracking.
+- **`testing` feature flag**: Dev-dependencies use `features = ["testing"]` to avoid polluting release builds.
+
+## ANTI-PATTERNS
+
+- Do NOT add I/O to `planning/` crate — it must stay pure domain logic.
+- Do NOT handle `Effect::ProjectView` / `Effect::PcbView` in CLI shell — only GUI uses those.
+- Do NOT start multiple phase tasks simultaneously — only one should be active.
diff --git a/planning/planner_gui_egui/AGENTS.md b/planning/planner_gui_egui/AGENTS.md
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+# PLANNER GUI (egui)
+
+**Parent:** [Planning AGENTS.md](../AGENTS.md)
+
+## OVERVIEW
+
+egui/eframe GUI shell for the Planner Crux core — 65 source files, largest frontend in the project.
+
+## STRUCTURE
+
+```
+planner_gui_egui/src/
+├── main.rs                # Entry point — eframe::run_native, i18n init, profiling setup
+├── lib.rs                 # Module declarations
+├── ui_app.rs (940 lines)  # Root app state — manages projects, pcbs, tabs, toolbar
+├── planner_app_core.rs    # PlannerCoreService — wraps Crux Core, Effect → PlannerAction
+├── config.rs              # Persistent app configuration (JSON)
+├── command.rs             # Command pattern for UI actions
+├── ui_app/
+│   └── app_tabs/          # Top-level tab types (home, new_project, new_pcb, project, pcb)
+├── project/
+│   ├── mod.rs (2995 lines)# Project view — largest file, orchestrates all project tabs
+│   ├── toolbar.rs         # Project-specific toolbar
+│   ├── process.rs         # Process management UI
+│   ├── tabs/              # 9 tabs: overview, explorer, pcb, unit_assignments, parts,
+│   │                      #   load_out, placements, phase, process, issues
+│   ├── tables/            # Data tables: placements, parts, load_out
+│   └── dialogs/           # Dialogs: add_phase, placement_orderings, package_sources, errors
+├── pcb/
+│   ├── mod.rs (1190 lines)# PCB editor view
+│   └── tabs/              # panel, configuration, gerber_viewer, explorer
+├── ui_components/         # Reusable UI components (gerber_viewer_ui)
+├── widgets/               # Custom widgets (list_box, augmented_list_selector)
+├── dialogs/               # App-level dialogs (manage_gerbers)
+├── forms/                 # Form validation utilities
+├── filter/                # Data filtering logic
+├── i18n/                  # GUI-specific i18n conversions
+├── runtime/               # Async runtime (tokio_runtime, legacy_runtime)
+├── task/                  # Background task management
+├── fonts.rs               # Font configuration
+├── profiling.rs           # puffin profiling integration
+├── tabs.rs                # Tab trait and egui_dock integration
+├── toolbar.rs             # Shared toolbar components
+├── file_picker.rs         # File dialog integration (rfd)
+└── ui_util.rs             # UI helper functions
+```
+
+## WHERE TO LOOK
+
+| Task | Location | Notes |
+|------|----------|-------|
+| Add project tab | `project/tabs/` | Create `*_tab.rs`, register in `project/mod.rs` |
+| Add PCB editor tab | `pcb/tabs/` | Create `*_tab.rs`, register in `pcb/mod.rs` |
+| Add data table | `project/tables/` | Uses `egui_deferred_table` (forked) |
+| Add dialog | `project/dialogs/` or `dialogs/` | Project-scoped vs app-scoped |
+| Add toolbar button | `project/toolbar.rs` or `toolbar.rs` | Project vs app level |
+| Modify Crux integration | `planner_app_core.rs` | Effect → PlannerAction mapping |
+| Add widget | `widgets/` | Reusable across views |
+| Change app layout | `ui_app.rs` | egui_dock tab management |
+| Add i18n key | `i18n/conversions.rs` + `.ftl` files | Fluent format |
+| Background async work | `runtime/`, `task/` | tokio-based |
+
+## CONVENTIONS
+
+- **Effect handling**: `PlannerCoreService.update(event)` returns `Vec<PlannerAction>` — caller processes actions sequentially.
+- **Tab system**: Uses `egui_dock` for dockable/floatable tabs. Each tab implements a trait.
+- **Large view files**: `project/mod.rs` (2995 lines) and `pcb/mod.rs` (1190 lines) orchestrate their respective views — read these first when understanding UI flow.
+- **Edition 2024**: This crate uses Rust edition 2024 (newer than most crates in workspace).
+- **Assets required**: Must run from crate directory — logos and i18n `.ftl` files loaded via relative paths.
+
+## ANTI-PATTERNS
+
+- Do NOT float tabs containing data tables in debug mode — causes panic (egui_dock #278).
+- Do NOT add business logic here — belongs in `planner_app` (Crux Core) or `planning` (domain).
+- Do NOT bypass `PlannerCoreService` — all state changes go through Crux Events.