Report actionable SysConfig pin errors without source IDs or stack traces

[AnasSarkiz]

When ti generate-sysconfig encounters connected MCU pins without selected functions, it previously printed generated record IDs, Bun source excerpts and a stack trace. Bundle the actionable converter from converter PR #9 at commit 3da9ac4b464a84eac13615dc684da7105065c685, and report its message with a nonzero exit status.

Before:

Failed to generate SysConfig: SysConfig conversion failed:
14461 | throw new Error(...)
error: Unresolved CC2340 pin configuration for U1 (source_component_0, CC2340R52E0RGER):
U1.DIO11 (source_port_3, pin 4): missing or ambiguous selected function...
...
at deriveCc2340Requests (...convert.mjs:14461:11)

After, for two connected pins without selected functions:

Failed to generate SysConfig: SysConfig conversion failed:
Unresolved CC2340 pin configuration for U1 (CC2340R52E0RGER):
- U1 pin 4 (DIO11): no GPIO direction or supported peripheral selected
- U1 pin 6 (DIO13): no GPIO direction or supported peripheral selected
Update U1's TSX pinAttributes with the intended function for each listed pin: set exactly one of isInput: true or isOutput: true for GPIO, or activeCapability: "i2c_sda" / "i2c_scl" for I2C.
Datasheet capabilities such as isGpio describe what a pin supports; they do not select how this board uses it.

Add toMatchInlineSnapshot() assertions for complete terminal errors from both Circuit JSON and TSX inputs. Also assert exit status 1, empty stdout and no partial .syscfg file. Include these Bun tests in the existing test:cli command alongside the Node CLI suite and schematic snapshot.

Validation:

• 60 Node CLI tests and 3 Bun tests pass, including both new inline error snapshots and the existing schematic snapshot.
• Typecheck and Biome pass.
• npm build and clean local/global package installation tests pass with the minimum supported tscircuit@0.0.2745.

This PR is limited to error reporting and its regression coverage. Pin capability behavior and datasheet metadata follow-ups are separate work. Nothing has been released.

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Project	Deployment	Actions	Updated
ti-system-block-ui	Ready	Preview	Oct 6, 2026 5:48pm UTC

[ShiboSoftwareDev]

test with inline snapshots