Add stock scoring commands

skills/openstock-agent-cli/references/commands/score/guide.md

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+# `openstock score`
+
+## Purpose
+
+Store and query local stock evaluation scores by stock ID.
+
+## Storage
+
+Scores are stored beside `.env` under the OpenStock config directory:
+
+```text
+~/.config/openstock/scores.json
+```
+
+Each score is an integer from 0 to 100. `0` is the lowest evaluation and `100` is the highest.
+
+## Subcommands
+
+| Command | Purpose |
+| --- | --- |
+| `openstock score set <symbol> <score>` | Save or update a stock score. |
+| `openstock score get <symbol>` | Read one stock score. |
+| `openstock score list` | List all saved scores. |
+| `openstock score delete <symbol>` | Delete one stock score. |
+
+## Output Fields
+
+| Field | Meaning |
+| --- | --- |
+| `path` | Score file path. |
+| `symbol` | Normalized stock ID. |
+| `score` | 0 to 100 score. |
+| `updated_at_unix` | Update Unix timestamp in seconds. |
+| `count` | Number of saved scores. |
+| `scores` | Score records sorted by score descending. |
+| `deleted` | Whether a record was deleted. |
+| `removed` | Deleted record, if any. |
+
+## Agent Notes
+
+Use this for user- or strategy-defined evaluation state. Do not treat the score as market evidence unless the workflow defines how it was produced.