
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
In the Cartesian coordinate system $xOy$, the graph of the linear function $y=kx+b$ ($k \neq 0$) intersects the positive half-axes of the $x$-axis and $y$-axis at points $A$ and $B$, respectively, and the area of $\triangle OAB$ is equal to $|OA|+|OB|+3$.  
(1) Express $k$ in terms of $b$;  
(2) Find the minimum value of the area of $\triangle OAB$.

Present the answer in LaTex format: \boxed{Your answer}
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